Questions on Algebra: Linear Equations, Graphs, Slope answered by real tutors!

Algebra ->  Linear-equations -> Questions on Algebra: Linear Equations, Graphs, Slope answered by real tutors!      Log On


   



Tutors Answer Your Questions about Linear-equations (FREE)


Question 999094: Hello People,
Trying to figure out and understand graphs, here is my question.
Please Help! I working on a two-step process. Thanking you in advance.
SEE BELOW::::
Write the equation for this situation: the value, y, in hundreds of dollars, of Allen’s stamp collection, is 2 dollars more than 2/3 of the age, x (in years).
Then graph the equation and use the graph to determine the value of Allen’s coin collection if it is 3 years old.
Betty

Click here to see answer by Theo(13342) About Me 

Question 999261: A line passes through the points -2 and -7 and has a slope of 3 write an equation for this line
Click here to see answer by mananth(16946) About Me 

Question 999154: find the equation of a line that has y-intercept (0,2) and the x-intercept (4,0) graph the line
Click here to see answer by mananth(16946) About Me 

Question 999263: A line passes through the point of -2,-7 and has a slope of 3 write a equation for this line
Click here to see answer by josgarithmetic(39617) About Me 

Question 999266: Sketch the graphs of:
xy:-1

Click here to see answer by Fombitz(32388) About Me 

Question 999295: The solution of linear equation x+ 2y1 is
Click here to see answer by Fombitz(32388) About Me 

Question 999265: Write a equation for -2, - 7 and has a slope of 3 write a equation for this line o
Click here to see answer by Cromlix(4381) About Me 

Question 999373: solve the following system by solving one of the equations for x or y and then using the subsitution methon
y=4x+7
y=4x-3

Click here to see answer by fractalier(6550) About Me 

Question 999376: y=2x+3
Click here to see answer by fractalier(6550) About Me 

Question 999490: Write an equation for the line through the given points or having the given slope and through the given point (_3,_5) and (1, 11) how to do that?
Click here to see answer by solver91311(24713) About Me 

Question 999405: 3x-5y+9 what is the anserw
Click here to see answer by Fombitz(32388) About Me 

Question 999411: If (3,n) is a solution of Ax + 3y= 6 and (n,5) is a solution of 5x + y= 20, what is the value of A **linear equations**
Click here to see answer by Fombitz(32388) About Me 

Question 999603: -3x-4x=+10
Click here to see answer by fractalier(6550) About Me 

Question 999560: The cost of replacing the carpet in a mall depends on the number of square yards to be covered. If the set fee for labor is $250 and the carpet (with padding) costs $15 per square yard, then the total cost represented by C can be found by the following equation: C = 15x + 250, where x represents the number of square yards needed.
QUESTION:
State a reasonable domain for this function

Click here to see answer by Fombitz(32388) About Me 

Question 999630: http://172.85.76.57/Library/00001230_84_624_A1.png Can you please go to the link and post the answer here? I'm bad at this kind of thing.
Click here to see answer by MathLover1(20849) About Me 
Question 999630: http://172.85.76.57/Library/00001230_84_624_A1.png Can you please go to the link and post the answer here? I'm bad at this kind of thing.
Click here to see answer by Theo(13342) About Me 

Question 999572: 10.) The figure below shows how the price of Amazon's Kindle has decreased over time. The green line is a trend line. (You can check that the hash marks on the horizontal axis are one-month intervals.)
http://www.webassign.net/craudql2/3-1-022.png
The trend line estimates that the price was $432 in November 2007 and $80 in September 2011. (That is an interval of 46 months.) Find the formula for the price, in dollars, as a linear function of the time t in months since November 2007. (Round numerical values to two decimal places.)

Click here to see answer by fractalier(6550) About Me 

Question 999643: Hi. I have a test coming up and I'm studying for it. But I don't know how to solve it. Here is my question:
For the following system, use the second equation to make a substitution for x in the first equation.
x + 5 y - 10 = 0
x = 2 y - 8
What is the resulting equation in simplest form?
My options were
-3 y - 18 = 0
3 y - 18 = 0
7 y - 18 = 0
7 y + 18 = 0
I don't know which one please help. And thank you to who ever helps

Click here to see answer by MathLover1(20849) About Me 
Question 999643: Hi. I have a test coming up and I'm studying for it. But I don't know how to solve it. Here is my question:
For the following system, use the second equation to make a substitution for x in the first equation.
x + 5 y - 10 = 0
x = 2 y - 8
What is the resulting equation in simplest form?
My options were
-3 y - 18 = 0
3 y - 18 = 0
7 y - 18 = 0
7 y + 18 = 0
I don't know which one please help. And thank you to who ever helps

Click here to see answer by ikleyn(52781) About Me 

Question 999644: a linear function that passes through the points (-4,2) and (5,-16) what is the y intercept
Click here to see answer by dkppathak(439) About Me 

Question 999156: a parabola contains the ponts (0,1)(4,5) and (8,7) graph these points and estimate the coordinates of the vertex.find an equation for the parsbola by setting up and solving system of equations
Click here to see answer by Fombitz(32388) About Me 

Question 999719: Hello my friends and helpers,
These are some problems I have not encountered, and I’m trying to learn just in case we have a test.
Thanking you in advance. Betty

1. Determine if (5/6, -2) is a solution to -6x-7y=9
2. Given the linear equation y = -2/3x +1. Find the y - coordinates of the points (-6, ), (-3, ) and (3, )

3. The Hansons have reduced the average number of hours they watch television each day from 5.5 hours in March to 2.5 hours in June. Find the rate of change in the average number of hours they watch television each day.
4. A survey of 2,000 people was given to find their mode of transportation to work each day. The pie chart below gives the results. Of the people surveyed, how many travel by bike to work?
There is the Pie Chart info below:
Bike 3.8%
Taxi 9.8%
Walk 3.4%
Bus 14.6%
Drive 68.4%







Click here to see answer by Fombitz(32388) About Me 

Question 999721: Graph the solution to this linear equation using two specific points, the x-intercept and the y-intercept.
-5x+2y=-10

Click here to see answer by mananth(16946) About Me 

Question 999805: Put the equation in standard form with a positive x coefficient.
y + 1/4 = -3 (x + 1/2)

Click here to see answer by mananth(16946) About Me 

Question 999818: i have to make a linear equation and solve it
The question is, penny family decided to go to the splash park. they purchased two adult tickets and two adult child tickets. the adult tickets were 1.5 time the price of the child tickets and the total cost for all four tickets was $85. what was the cost of each type of ticket.

Click here to see answer by solver91311(24713) About Me 

Question 999822: Put the equation in standard form with a positive coefficient.
y+3=-5(x+1)

Click here to see answer by josgarithmetic(39617) About Me 

Question 999849: -5x+2y=11
please find or help me find three ordered pairs thank you:)

Click here to see answer by josgarithmetic(39617) About Me 
Question 999849: -5x+2y=11
please find or help me find three ordered pairs thank you:)

Click here to see answer by AnlytcPhil(1806) About Me 

Question 999861: Line perpendicular to y=2x+3 and passes through (2,-3)

Click here to see answer by Fombitz(32388) About Me 

Question 999900: Put the equation in standard form with a positive x coefficient.
Y-13=4(X-2)

Click here to see answer by Boreal(15235) About Me 

Question 999901: put the equation in standard form with a positive x coefficient.
y+7=1/2(x+2)

Click here to see answer by Boreal(15235) About Me 

Question 999923: Put the equation in Standard Form with a positive x coefficient.
y+2=5/3(x+6)

Click here to see answer by stanbon(75887) About Me 

Question 999934: Put the equation in Standard Form with a positive x coefficient.
y+2=5/3(x+6)

Click here to see answer by fractalier(6550) About Me 
Question 999934: Put the equation in Standard Form with a positive x coefficient.
y+2=5/3(x+6)

Click here to see answer by MathLover1(20849) About Me 

Question 999961: 10ac-x
------ = -3 solve for x
11

Click here to see answer by MathLover1(20849) About Me 

Question 999988: y=5x-3
y=8x+4
do I just set them equal to each other and solve for x?

Click here to see answer by mananth(16946) About Me 

Question 1000051: (-3,0)m=-2
(1/2,2)m=-1
(3,0)m=-3
(4,3)m=3/4
(-3,-5),m=-3/5
(-1/2,0)m=3

Click here to see answer by josgarithmetic(39617) About Me 

Question 1000053: find the x- and y- intercepts of the line that passes through the given points. (-5,-5),(4,-2). Your help is greatly appreciated, thank you!

Click here to see answer by josgarithmetic(39617) About Me 
Question 1000053: find the x- and y- intercepts of the line that passes through the given points. (-5,-5),(4,-2). Your help is greatly appreciated, thank you!

Click here to see answer by MathTherapy(10552) About Me 
Question 1000053: find the x- and y- intercepts of the line that passes through the given points. (-5,-5),(4,-2). Your help is greatly appreciated, thank you!

Click here to see answer by cinnholmes(1) About Me 

Question 1000089: Five years ago, a mother was twice as old as her son. In 6 years time the sum of their ages will be 82. Find their present ages.
Click here to see answer by Alan3354(69443) About Me 

Question 1000124: Use point slope form to find equation of line, then write in in slope intercept form
Y-10=1/5 (x-1)

Click here to see answer by stanbon(75887) About Me 

Question 1000327: Please help, I am so lost on these 2 problems, I ask earlier and was ask to finish, but I don't know how. Thanking you in advance Betty
1. Determine if (5/6, -2) is a solution to -6x-7y=9

2.Given the linear equation y = -2/3x +1. Find the y - coordinates of the points (-6, ), (-3, ) and (3, )

Click here to see answer by jim_thompson5910(35256) About Me 

Question 1000343: x and y intercept of:
2x-5y=-10

Click here to see answer by josgarithmetic(39617) About Me 

Question 1000344: Form linear equations into the form shown in brackets:
y=-3x+7 (ax+by=d)

Click here to see answer by josgarithmetic(39617) About Me 

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 27136..27180, 27181..27225, 27226..27270, 27271..27315, 27316..27360, 27361..27405, 27406..27450, 27451..27495, 27496..27540, 27541..27585, 27586..27630, 27631..27675, 27676..27720, 27721..27765, 27766..27810, 27811..27855, 27856..27900, 27901..27945, 27946..27990, 27991..28035, 28036..28080, 28081..28125, 28126..28170, 28171..28215, 28216..28260, 28261..28305, 28306..28350, 28351..28395, 28396..28440, 28441..28485, 28486..28530, 28531..28575, 28576..28620, 28621..28665, 28666..28710, 28711..28755, 28756..28800, 28801..28845, 28846..28890, 28891..28935, 28936..28980, 28981..29025, 29026..29070, 29071..29115, 29116..29160, 29161..29205, 29206..29250, 29251..29295, 29296..29340, 29341..29385, 29386..29430, 29431..29475, 29476..29520, 29521..29565, 29566..29610, 29611..29655, 29656..29700, 29701..29745, 29746..29790, 29791..29835, 29836..29880, 29881..29925, 29926..29970, 29971..30015, 30016..30060, 30061..30105, 30106..30150, 30151..30195, 30196..30240, 30241..30285, 30286..30330, 30331..30375, 30376..30420, 30421..30465, 30466..30510, 30511..30555, 30556..30600, 30601..30645, 30646..30690, 30691..30735, 30736..30780, 30781..30825, 30826..30870, 30871..30915, 30916..30960, 30961..31005, 31006..31050, 31051..31095, 31096..31140, 31141..31185, 31186..31230, 31231..31275, 31276..31320, 31321..31365, 31366..31410, 31411..31455, 31456..31500, 31501..31545, 31546..31590, 31591..31635, 31636..31680, 31681..31725, 31726..31770, 31771..31815, 31816..31860, 31861..31905, 31906..31950, 31951..31995, 31996..32040, 32041..32085, 32086..32130, 32131..32175, 32176..32220, 32221..32265, 32266..32310, 32311..32355, 32356..32400, 32401..32445, 32446..32490, 32491..32535, 32536..32580, 32581..32625, 32626..32670, 32671..32715, 32716..32760, 32761..32805, 32806..32850, 32851..32895, 32896..32940, 32941..32985, 32986..33030, 33031..33075, 33076..33120, 33121..33165, 33166..33210, 33211..33255, 33256..33300, 33301..33345, 33346..33390, 33391..33435, 33436..33480, 33481..33525, 33526..33570, 33571..33615, 33616..33660, 33661..33705, 33706..33750, 33751..33795, 33796..33840, 33841..33885, 33886..33930, 33931..33975, 33976..34020, 34021..34065, 34066..34110, 34111..34155, 34156..34200, 34201..34245, 34246..34290, 34291..34335, 34336..34380, 34381..34425, 34426..34470, 34471..34515, 34516..34560, 34561..34605, 34606..34650, 34651..34695, 34696..34740, 34741..34785, 34786..34830, 34831..34875, 34876..34920, 34921..34965, 34966..35010, 35011..35055, 35056..35100, 35101..35145, 35146..35190, 35191..35235, 35236..35280, 35281..35325, 35326..35370, 35371..35415, 35416..35460, 35461..35505, 35506..35550, 35551..35595, 35596..35640, 35641..35685, 35686..35730, 35731..35775, 35776..35820, 35821..35865, 35866..35910, 35911..35955, 35956..36000, 36001..36045