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

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Question 416944: Use this table to answer the following questions:
x y
1 -1/4
2 -1/2
3 -3/4
4 ???

Between x and y, would the correlation be positive or negative?

What is the missing value of y in the table?
How would the values of this table be interpreted in terms of linear regression?

If a "line of best fit" is placed among these points plotted on a coordinate system, would the slope of this line be positive or negative?

Click here to see answer by ewatrrr(24785) About Me 

Question 417190: If a is a system of two linear equations has no solution, then the graphs of the two equations must be _______________ lines.
Click here to see answer by stanbon(75887) About Me 

Question 417096: So the equation is as follows, -4x=8-2y We are suppossed to graph. I am assuming using intercept method since that is what the unit is about. However I have the solution sets but do not understand how they are getting there...I need step by step to understand this...then I can graph it myself...Please help me. Thank You!!
Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 417444: What is the equation of the line that passes through (4, -1) and (-2, 3)?
Can you help me answer this? I keep getting y = -4/6x + ? and it has to be written in general form.

Click here to see answer by Alan3354(69443) About Me 

Question 417438: line l goes through (4,-2) and is parallel to 4x+2y=5
Click here to see answer by MathLover1(20849) About Me 

Question 417511: slope -3/2 ordered pair(-2,1)
Click here to see answer by nerdybill(7384) About Me 

Question 417554: how do you find the vertex of y=225-x^2
Click here to see answer by ewatrrr(24785) About Me 
Question 417554: how do you find the vertex of y=225-x^2
Click here to see answer by Gogonati(855) About Me 

Question 417619: sovle with a compound inequality
(x+10)(x-2)(x+2)>0
my answer is -10

Click here to see answer by Gogonati(855) About Me 

Question 417648: How do you write 4x-7y+8=0 in slope intercept form?
Click here to see answer by stanbon(75887) About Me 

Question 417594: how do i write an equation by looking at a slope line?
Click here to see answer by rfer(16322) About Me 

Question 417316: How do u plot this linear equation: y=.15x + 10
Click here to see answer by scott8148(6628) About Me 

Question 417876: Can you please show me a graph that has the slope of -3/2 and a y intercept of 1? Thanks a bunch!!
Click here to see answer by stanbon(75887) About Me 

Question 417882: a line having a slope of 3/4 passes through the point(-8,4) . Write the equation of this line in slope-intercpt form.
Click here to see answer by mananth(16946) About Me 

Question 417721: Jessica is driving on the highway. She begins the trip with 14 gallons of gas in her car. The car uses up one gallon of gas every30 miles.
Let g represent the number of gallons of gas she has left in her tank, and letd represent the total distance (in miles) she has traveled

Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 417933: determine whether the ordred pair is a solution of the inequality. (9,10); 5y-6x>2
Click here to see answer by rfer(16322) About Me 

Question 417920: Please help! Desperately need assistance. I feel braindead! This is so confusing. Water is being pumped out of a pool. the number of gallons "W" left in the pool at a time "T" can be modeled by W(t)= -7t plus 350. Please help. it will be greatly appreciated.
Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 418009: solve the system of equations by graphing. Then classify the system
x+y=9
x-y=3
What is the soltion of the system. Select the correct choice below and if neccessary fill int he answer box to complete your choice.
A- The solutin is___
B- There are infintely many solutins
C-There is no soluton

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

Question 418018: (3x+5)/5=10
Click here to see answer by shree840(260) About Me 

Question 418001: Determine whether the ordered pair is a solution of the inequality.
(9,10);5y-6x>2
yes or no

Click here to see answer by Edwin McCravy(20055) About Me 

Question 417833: determine if the pair of lines is parallel, perpendicular, or neither
2x+5y=8
5x-2y=1

Click here to see answer by robertb(5830) About Me 

Question 418063: if i have the ordered pairs (-5,-6)(3,4) what would my linear equation be ?

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

Question 418072: if i have the ordered pairs (-3,5) (6,-8) what would my linear equation be ?

Click here to see answer by Gogonati(855) About Me 

Question 418264: having troble helping my son with the following eq:
F(x)=mx+b /
The work sheet gives 3, 5 and 7 as inputs (x) and resulting output (F) being 5, 7, 9
F(x) = x+2
They want him to take it out two more places.
I know the answer.
How do I explain this to him.

Click here to see answer by Edwin McCravy(20055) About Me 

Question 418304: Enter the equation of the following using line in slope-intercept form.
slope = 3; y-intercept is -3

Click here to see answer by josmiceli(19441) About Me 
Question 418304: Enter the equation of the following using line in slope-intercept form.
slope = 3; y-intercept is -3

Click here to see answer by oberobic(2304) About Me 

Question 418335: Enter the equation of the following using line in slope-intercept form.
x-intercept = 2; y-intercept = -3

Click here to see answer by rfer(16322) About Me 

Question 418347: Jack measured 1 amp as the total current in a certain circuit when he applied 20 volts to the circuit. When he applied 60 volts, he got a measurement of 3 amps. Write a linear equation describing the relation between voltage and current, and calculate the total current when 50 volts are applied to the circuit.
Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 418451: what is the slope of the line that passes through (1,-5) and (4,3)
Click here to see answer by robertb(5830) About Me 

Question 418529: Find the x- and y-intercept and write the equation of the line 2x+3y=-18 in slope intercept form.
Click here to see answer by mananth(16946) About Me 

Question 418677: Average rate of change...
f(x)=6x from x1=0 x2=4
Would it be 6 because change is 6 all around? Is there a way to work this out other than just knowing that?

Click here to see answer by Alan3354(69443) About Me 

Question 418766: Tickets for a concert were priced at $3 for students and $5 for nonstudents. There were 1500 tickets sold for a total of $5000. How much revenue was generated from the sale of the student tickets?
Click here to see answer by duckness73(47) About Me 

Question 418975: What is the slope of the line joining (-8,1) and (4,10)?

Click here to see answer by rfer(16322) About Me 

Question 418988: Find the slope of (1,1),(6,3)
Click here to see answer by rfer(16322) About Me 

Question 419066: Write an equation of the line that is parallel to the graph of y-3x=4 and has the same y- intercept as the graph for 4y+x=36
Click here to see answer by algebrahouse.com(1659) About Me 

Question 419036: I need help understanding how to solve by graphing:
3x + 4y = 20
3x - 2y = 8

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

Question 419226: determine the slope of the line shown at the right first point is -2 on x-axis and second is at 5 on y axis
a.m=?
b. the slope is undefined

Click here to see answer by Mr. Math Wiz(7) About Me 

Question 419343: please help solve.. 6x-6>2(2x-8)
Click here to see answer by rfer(16322) About Me 
Question 419343: please help solve.. 6x-6>2(2x-8)
Click here to see answer by duckness73(47) About Me 

Question 419331: A company pays workers with eight years experience $40,000 per year, and workers with twenty years experience $57,000 per year. Assume that the company increases salaries linearly. Write a linear equation that gives salary S of a worker with t years of experience.
Click here to see answer by josmiceli(19441) About Me 

Question 419459: find the slope and the y-intercept
f (x)=-10x-6
the slope is??
the y-intercept is (0,_).

Click here to see answer by Gogonati(855) About Me 

Question 419400: Explain in your own words why the line x = 4 is a vertical line.
Explain in your own words why the line y = 4 is a horizontal line.



Click here to see answer by richard1234(7193) About Me 

Question 419521: For which values of 'a' are the lines 'y=ax+6' and 'x+2y=4' parallel?
Click here to see answer by richard1234(7193) About Me 

Question 419576: Hello, how do I I find the equation of the line joining (-3,-3) and (4,8)? I need to leave the answer in general form. I am struggling to figure this out, so any help is greatly appreciated! :)
Click here to see answer by rfer(16322) About Me 

Question 419587: How do I find the equation of the line with:
1) x-intercept= 3 and y-intercept= -8
2) x-intercept= -2 and y-intercept= 10
Hi, I'm having trouble with these two questions. I have test on coordinate geometry tomorrow that includes some of these, and they are the one's I am struggling with. Thank you for your assistance!

Click here to see answer by rfer(16322) 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, 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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, 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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