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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 539759: write the equation of the vertical line that passes through the point (7,-3)
Click here to see answer by mananth(16946)

Question 539758: find an equation, in slope intercept form, that passes through point (-4, -1) with slope -2.
Click here to see answer by mananth(16946)

Question 539738: Determine whether each system of linear equations has a) one and only one solution, b) infinitely many solutions, or c) no solution. Find all solutions whenever they exist.
2x-4y=5
3x+2y=6
Click here to see answer by mananth(16946)

Question 539832: Write the slope-intercept form of the equation of the line that passes through the point (-2,4)and is perpendicular to the line with equation 2x-y+12=0.

Click here to see answer by mananth(16946)

Question 539917: what is the slope of the function -6x - 2y=8
Click here to see answer by jim_thompson5910(35256)

Question 540124: What is the equation in slope intercept form for a line with a slope of 7/3 and passes through the points (7,0) & (10,7)?
What are their x and y-intercepts? What are their (x,y) coordinates?
Click here to see answer by stanbon(75887)

Question 540214: how would you put (7,12), (4,1) in slope-intercept form?
Click here to see answer by jim_thompson5910(35256)

Question 540368: y+1=2(x-5)
Click here to see answer by jim_thompson5910(35256)

Question 540332: Ok, I seriously need help. It's a must, someone please answer this!
There is a line with a slope of 7/3.
What are the points of a line pependicular through the point(8,-1)?
What are the points of a line parrel to the point (8,-1)?
----> if this helps, the slope intercept form is y=7/3x-49/3 & the x and y-intercept coordinates are (0,-49/3).

Click here to see answer by scott8148(6628)

Question 540347: Find the equation of a line that is parallel to 3x + 4y = 5 and containing the point (5, 0). Please show all of your work and write your answer in slope-intercept form
Click here to see answer by mananth(16946)

Question 540576: Find the slope of the line passing through the points (7, 4) and (-9, 4).

Click here to see answer by Alan3354(69443)

Question 540685: i need the slope of the line 3x+5y=2
Click here to see answer by oberobic(2304)

Question 540734: 6/5 - y/3= 1/15
Click here to see answer by mananth(16946)

Question 540680: Regression equation for the profit of a new e-reader:
Profit = $0.15 x number of e-readers sold - $28
values given in thousands
If the company does not sell a single e-reader, how much is lost? Mathematically, what is this value called in the equation?
I appreciate any help you can give me. I've never taken algebra before and I am so lost. Thank you
Click here to see answer by KMST(5328)

Question 540750: I need to find the slope of the following:
6x-5y+12=0
4x-5=y
y=-3x+2
And the slope if there is one to a line with the coordinates (-3,1/2) (-6,1/2)
Thank you for your help
Click here to see answer by Alan3354(69443)

Question 540798: How do I graph 70-10y=0?
Click here to see answer by fcabanski(1391)

Question 540855: how do you solution this equation y=x+6;(0,6)

Click here to see answer by Alan3354(69443)

Question 540857: The Slope is 3; the y-intercept is -2 ?
Click here to see answer by Alan3354(69443)

Question 540937: solve using the elimination method. 7x-6y= -88.5 and -28x+24y= -354. I'm so lost as to how to do these, can someone please help??
Click here to see answer by AnlytcPhil(1806)

Question 540943: The math club at Franklin Middle School is selling tutorial books. The club paid $136 for three cases each containing 72 books. The math club sells each book for $8
Use the function P = 8b - 136 where P is the profit in dollars and b is the number of books sold to determine how many books must be sold to make a profit.
Thanks!
Click here to see answer by Theo(13342)

Question 540895: Regression equation:
P = 0.15x - 28 ( values given in thousands)
Profit = $150x - $28,000
If profit must equal $100,000, how many items need to be sold
I don't know how to put this in a formula format. I appreciate any help you can give in since algebra is new to me. Thank you so much for being there when needed. You are a godsend. Thank you! Thank you!!!!
Click here to see answer by Theo(13342)

Question 540958: Solve using the elimination method. I'm messing up somewhere with this, I'm just not sure where, please help.
-2x - 8y = 22
-6x - y = 20
Click here to see answer by AnlytcPhil(1806)

Question 541015: write the equation of the line that contains the 2 points given in (7,0) and (9,6)
Click here to see answer by friesr(113)

Question 541023: Find te slope and y-intercept of the line described by 3x-2y=6.
3x-2y=6
y=-2=6-3x
y=6-3x/-2
y=-3+3/-2x=3/2x
Click here to see answer by richwmiller(17219)

Question 541060: Please help me break down these problems that i do not understand how to slove. thank u
1) FIND THE SLOPE OF THE EQUATION: 4Y = 4X + 4
2) FIND THE SLOPE OF THE EQUATION: X + y = 7
3) WHAT IS THE "Y" INTERCEPT IN THE GRAPH OF THE EQUATION: -3Y = 1/2 X
4) WHAT IS THE "Y" INTERCEPT FOR THE LINE OF THE EQUATION: 6X + 3Y = 9

Click here to see answer by friesr(113)

Question 541191: solve the system of equations by graphing. 3x-2y=18, -3x-y=0
Click here to see answer by mananth(16946)

Question 541348: Find the slope and y-intercept of the graph of the equation Ax+By=C where B is not equal to 0. Use your results to find the slope and y-intercept of the graph of 3x+2y=18
Click here to see answer by jim_thompson5910(35256)

Question 541551: find the equation of the line having the given slope and containing the given point?
m=2/3,(4,-7)
Click here to see answer by oberobic(2304)

Question 541618: find the slope and y-intercept of the line 7x+4y=24

Click here to see answer by friesr(113)

Question 541618: find the slope and y-intercept of the line 7x+4y=24

Click here to see answer by Alan3354(69443)

Question 541689: what is the slope of y=-5x+5
Click here to see answer by rfer(16322)

Question 541744: how does y=x+7 look on a graph
Click here to see answer by boilpoil(127)

Question 541860: Find the slope if it exists.y=-7x+4
Click here to see answer by friesr(113)

Question 542079: i have to write an equation of a line that contains the given information:through the point (4,3) and parallel to the line y=2x+5
Click here to see answer by rfer(16322)

Question 542079: i have to write an equation of a line that contains the given information:through the point (4,3) and parallel to the line y=2x+5
Click here to see answer by stanbon(75887)

Question 542112: What is the slope of the line that contains the points (2,13) and (6,33)?
Click here to see answer by jim_thompson5910(35256)

Question 541789: Give the coordinates of two points on the line y = -2.
Click here to see answer by jim_thompson5910(35256)

Question 542179: How do you put 6x-3y = 12 into slope intercept form?
Click here to see answer by jim_thompson5910(35256)

Question 542191: How do you find intercepts to the problem 6x-3y =12
Click here to see answer by jim_thompson5910(35256)

Question 542457: On the paper there is a right triangle it has the two lines on two of the sides to mean they are the same. It doesn't tell any of the lengths but if is on a grid. It has 4 squares on both of the sides that are the same, however I'm not sure if it's drawn to scale. It wants me to find the slope and use the Pythagorean theorem if necessary.
Click here to see answer by Theo(13342)

Question 542511: What is the slope and y- intercept of -3y = 4(6x - 3)?
Click here to see answer by nerdybill(7384)

Question 542522: Write the equation of the line in slope-intercept form with a slope of �6 and a y-intercept of 9.
Click here to see answer by fcabanski(1391)

Question 542844: write an equation that is parallel to the graph of the line that passes though the points (-8,2) and (-3,3)?
Click here to see answer by stanbon(75887)

Question 542848: Can you help me with this homework question ...
Kate is SCUBA diving on the Bahamas. She is currently 135 feet under water but she is swimming towards the surface at a rate of 15 feet per minute. Write an equation that represents the time, in minutes, and y represents Kate's depth underwater
Click here to see answer by stanbon(75887)

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