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

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Question 823507: Line l goes through (-2,5) and is perpendicular to 6x-3y=1. Find the equation of line . Write the answer in standard form with integral coefficient with a positive coefficient for x.
Click here to see answer by richwmiller(17219)

Question 823515: Line l has slope 7 and goes through (0,1/3). Find the equation of line l and write it in standard form with integral coefficients.
Click here to see answer by stanbon(75887)

Question 823531: Write the equation for the line that passes through the point (5,2) and is perpendicular to the graph of x+3y=7

Click here to see answer by TimothyLamb(4379)

Question 823380: Find the equation, in standard form, of the line perpendicular to -5x+3y=3 that passes through the points (-8,-9). Write the equations in standard form.

Click here to see answer by TimothyLamb(4379)

Question 821357: AB contains points (4,3) and (-1,-7). write the equation of the line parallel to AB that contains the point (2,3). write your equation in standard form.
Click here to see answer by TimothyLamb(4379)

Question 820904: an internet connection costs $9.95 a month plus $2 for each hour. Write a function that represents the total cost, C, in terms of the number of hours, h. Use the equation to predict the total cost of using the internet for 25 hours.
Click here to see answer by TimothyLamb(4379)

Question 823608: how do I solve and graph 0=x+1/4(y)+1/2 ?

Click here to see answer by TimothyLamb(4379)

Question 823645: A line passes through the origin and the point (c,d). What is the slope of the line?
Click here to see answer by stanbon(75887)

Question 823657: If a jar is full of 100 coins and all the coins are either nickles or dimes, what is a linear equation representing it?
Click here to see answer by stanbon(75887)

Question 823689: Write an equation in Slope-intercept form for the line that is perpendicular to the line y = 2x - 5 that passes through the given point (4,-2). Show your work.
Click here to see answer by algebrahouse.com(1659)

Question 820885: Write an equation in point-slope form of the line that passes through the given point and has the given slope m:
(5,-12), m = -2/5
(thats two over five)
Would you please also work out the problem so i know and understand how to do it in the future?

Click here to see answer by TimothyLamb(4379)

Question 820415: Explain in words how to write an equation that is part one: parallel and then also part two: perpendicular to the equation y=(2/3)x-4 passing through the point (-2,-5). Write your answer in standard form.
Click here to see answer by TimothyLamb(4379)

Question 819387: Solve the system by the method of elimination and check any solutions algebraically
{2x + 5y = 12
{5x + 8y = 15

(x, y) =
Click here to see answer by TimothyLamb(4379)

Question 823712: What is the graph of a line that passes through (2,4) and has a gradient of one-half?
i really need it...

Click here to see answer by richwmiller(17219)

Question 823770: 1. Select the proper equation in point-slope form for the given point and slope.
Point: (1, 9); Slope: 5
(Points : 1)
y � 1 = 5(x + 9)
y � 9 = 5(x + 1)
y � 9 = 5(x � 1)
y + 9 = 5(x � 1)

Question 2.2. Select the proper equation in point-slope form for the given point and slope.
Point: (�8, 3); Slope: 6
(Points : 1)
y + 3 = 6x � 48
y + 3 = 6(x + 8)
y � 3 = 6(x � 8)
y � 3 = 6(x + 8)

Question 3.3. Select the proper equation in point-slope form for the given point and slope.
Point: (1, �7); Slope:
(Points : 1)
y + 7 = (x � 1)
y �7 = (x + 1)
y + 7 = (x + 1)

y �7 = (x � 1)

Question 4.4. A yearbook printer charges based on the number of pages printed. Here is a table that shows the cost of some recent yearbooks:
07_08_LQ_4.gif
Which equation gives the cost, y, in terms of the number of pages, x?
(Points : 1)
y = 83.3x + 0.65
y = 0.012x + 0.65
y = 0.012x + 1.25
y = 0.012x + 49.985
Click here to see answer by ewatrrr(24785)

Question 823786: identify the slope of the line that is perpendicular to the line 2y=5x-14

Click here to see answer by TimothyLamb(4379)

Question 823826: mike wants make a meatload of 3 pounds. if he uses a 3 to 1 ratio of beef to pork, how much pork will he use?
Click here to see answer by richwmiller(17219)

Question 823825: Question 1: Mallory often babysits her neighbors children. She gets paid $6.00 per hour for one child and another dollar per hour for each additional child, as shown in the table below.
Number of children. Hourly rate ($)
1 6
2 7
3 8
4 9
A. Domain:{1,2,3,4}. Range:{6,7,8,9}
B. Domain:{6,7,8,9}. Range:{1,2,3,4}
C. Domain:{number of children}. Range:{number of hours}
D. Domain:{number of hours}. Range:{number of children}
Click here to see answer by stanbon(75887)

Question 823942: the ordered pairs in the sets shown below are of the form (x,y) in which set of ordered pairs is y a function of x?

Click here to see answer by Edwin McCravy(20055)

Question 823965: To go on the class trip, Chang needs at least $125. He has saved $45, and he makes $7 an hour at his job.
What is the minimum number of complete hours he must work to have enough money to go on the trip? (Assume there are no withholdings from his check.)

10 hours
11 hours
12 hours
Click here to see answer by TimothyLamb(4379)

Question 824045: 2(x-1)/3=1+3x-(6/4)
Click here to see answer by kuhal(1)

Question 824129: Suppose that the height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning. After 7 hours of burning, a candle has a height of 22.8centimeters. After 21 hours of burning, its height is14.4 centimeters. What is the height of the candle after 12 hours?
Click here to see answer by josgarithmetic(39617)

Question 824263: how do I find the equation of the line passing through the points (1,1/7) and (5,3/2)
Click here to see answer by TimothyLamb(4379)

Question 824330: ORDERED PAIR
Find x and y given (2x, x + y) = (6, 2)
Click here to see answer by milo1954(10)

Question 824334: Find an equation for the line with the given properties. Express the answer using the slope-intercept form of the equation of the line.
horizontal; containing the point (1.9,-4.7)
Click here to see answer by stanbon(75887)

Question 824333: Find and equation of the line with slope undefined and containing the point (-5,-1)
Click here to see answer by stanbon(75887)

Question 824310: y=2x+50
1. represent the equation by drawing a graph assuming any 5 values for "x"
2. use the graph to find the number of units produced if the total cost is omr 400.
Click here to see answer by TimothyLamb(4379)

Question 824366: x-y+z=4
5x+2y-3z=2
4x+3y-4z=-2
find x, y, & z.
is there problem with the given? why I can't solve it?
Click here to see answer by Alan3354(69443)

Question 824368: 6x + 2y - 4z = 15
-3x - 4y + 2z = -6
4x - 6y + 3z =8
find x, y, & z.
Click here to see answer by Alan3354(69443)

Question 824367: (1/x)-(3/y)=-8/3
(4/x)+(2/y)=-10/3
find x, & y.

Click here to see answer by Alan3354(69443)

Question 824419: Find all zeros of the function and write the polynomial as a product of linear factors.
f(x) = x^4 + 13x^2 + 36
Click here to see answer by Alan3354(69443)

Question 824522: how do I solve y = x + 1
y =-3x + 9
solve the linear system by graphing
Click here to see answer by TimothyLamb(4379)

Question 824485: Which of the following points is a solution of the system shown?
x + y ≥ 6
x ≥ 4

(-1, 7)
(4, -2)
(4, 2)
Click here to see answer by oscargut(2103)

Question 824486: Which of the following points is not a solution of the system shown?
x ≥ 7
y ≤ x + 7

(7, 7)
(7, 15)
(8, 14)
Click here to see answer by oscargut(2103)

Question 824532: There is no solution to the following system of equations.
x < 3
y > 3
Click here to see answer by Alan3354(69443)

Question 824681: Solve systems of three variables. linear eqations
2x+2y+z=1
-x+y+2z=3
x+2y+4z=0
Click here to see answer by TimothyLamb(4379)

Question 824683: Graph using elimination
2x+6y=8
3x+9y=12
Click here to see answer by stanbon(75887)

Question 823201: F=9/5C +32
(x+10)Celsius=x Fahreheit
2xC=xF
k F=(-3k) C

Click here to see answer by tommyt3rd(5050)

Question 824744: Kristi's ride to school is 3 minutes more than 1/2 Brianne's travel time. what graph shows the possible times of Kristi's and Brianne's rides to school?
Click here to see answer by josmiceli(19441)

Question 824851: Please, Please help, As soon as possible!
Use Elimination to solve--
2x=6
x=5-y
Click here to see answer by faceoff57(108)

Question 824883: Given the following equation: (sinx+cosx)^2= 1/2, Find x.
Click here to see answer by Alan3354(69443)

Question 824852: Help solve! As soon as possible!
x +5z=0
5x+y =0
y-3z=0
Click here to see answer by Alan3354(69443)

Question 824930: Solve------
x +5z=0
5x+y =0
y-3z=0
Click here to see answer by TimothyLamb(4379)

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