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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 804311: find the value of r so the line that passes through each pair of points has the given slope.
(r,3) (5,9), m=2
Click here to see answer by erica65404(394)

Question 804464: Find an equation of the line
Containing the point (2,-5) and parallel to the line 3x-5y= 9
I know I need to solve for "y", but my answer didn't go with the one my teacher got
Click here to see answer by erica65404(394)

Question 804465: Can I please ask for some help to find the X & Y intercept from this equation using a GRAPHICAL Technique.
y=4x-7
3x+2y=30.
I have the answer but unable to show proper working by using the ax+by=c method.
Click here to see answer by erica65404(394)

Question 804510: what is 60x+5y=2 in slope intercept?
Click here to see answer by erica65404(394)

Question 804526: In 2007, the average e-mail user sent 578 personal and business e-mails each week. The number of business e-mails was 32 more than the number of personal e-mails. How many of each type were sent each week?
Click here to see answer by erica65404(394)

Question 804542: Find the equation of the line that contains the point (2,-7) and is perpendicular to the line containing the points (-4,6) and (3,6)
Click here to see answer by erica65404(394)

Question 804544: Find the equation of the line that contains the point(5,-7)and is perpendicular to the line containing the points (-4,9) and (3,6).
Click here to see answer by erica65404(394)

Question 804593: solve using elimination method: 3x-4y=9 and -3x+2y=9

Click here to see answer by mananth(16946)

Question 804667: Can someone please explain whether or not 3xy=6 is linear or nonlinear and why?

Click here to see answer by solver91311(24713)

Question 804726: What are the intercepts for the graph of the equation 2x+y=-4
Click here to see answer by rfer(16322)

Question 804941: What is the point of intersection/whether the point is a solution for:
2x + y = 3
-x + 3y = -12
Thanks. x
Click here to see answer by stanbon(75887)

Question 804940: What is the point of intersection/whether the point is a solution for:
x + 3 y = 15
2x - 3y = - 16
Thanks. x
Click here to see answer by MathLover1(20849)

Question 805124: Please help me find the slope and y- intercept of the graph of this equation
2/3x + 1/6y = 2
Click here to see answer by josgarithmetic(39617)

Question 805243: Find the equation of the line that passes through (-7,2) and (-4,5) in the form Ax+By=C.
Click here to see answer by stanbon(75887)

Question 805349: Y Intercept: 6x^2+12x+6
It's been a while since i've done this and i need some help.
Click here to see answer by Alan3354(69443)

Question 805435: how do you solve this 5/11x + 23/11 = -2/6x + 17/3 solve for x and substitute for y
Click here to see answer by Alan3354(69443)

Question 805454: the question is " solve all positive integers (x,y) that satisfy: x^2-4xy+3y^2=17"
i factored it down to (x-y)(x-3y)-17=0. and now i don't know what to do. Could you possibly walk me through the rest of the problem?
Click here to see answer by stanbon(75887)

Question 805406: find the coordinates of the y-intercept of the line. y=4x-14
Click here to see answer by erica65404(394)

Question 805783: 1. write an equation of the line containing (6, 5) and having slope 3/4.
a. express the equation in f(x) = mx + b form
b. create a table of values with at least 5 ordered pairs.
c. give the domain, range, x- and y-intercepts and trend.
d. sketch the graph of the line.
e. give the equation of its inverse g(x) = mx + b form
2. 2. Write an equation of the line containing (1, -3) and (-4, -2).
a. Express the equation in f(x) = mx + b form.
b. Create a table of values with at least 5 ordered pairs.
c. Give the domain, range, slope, x-and y-intercepts and trend.
d. Sketch the graph of the line.
e. Give the equation of its inverse g(x) = mx + b form.
3. Write an equation of the line whose x-intercept is 5 and y-intercept is -3.
a. Express the equation in f(x) = mx + b form.
b. Create a table of values with at least 5 ordered pairs.
c. Give the domain, range, slope, and trend.
d. Sketch the graph of the line.
e. Give the equation of its inverse g(x) = mx + b form.
4. Write an equation of the line which is parallel to 5x � 3y = 15 that passes through (2, 3).
a. Express the equation in f(x) = mx + b form.
b. Create a table of values with at least 5 ordered pairs.
c. Give the domain, range, slope, x-and y-intercepts and trend.
d. Sketch the graph of the line.
e. Give the equation of its inverse g(x) = mx + b form.
5. Write an equation of the line which is perpendicular to 5x � 3y = 15 that passes through (2, 3).
a. Express the equation in f(x) = mx + b form.
b. Create a table of values with at least 5 ordered pairs.
c. Give the domain, range, slope, x-and y-intercepts and trend.
d. Sketch the graph of the line.
e. Give the equation of its inverse g(x) = mx + b form.
Click here to see answer by oscargut(2103)

Question 805790: 5(2x-9)/3-8=2x
Click here to see answer by oscargut(2103)

Question 805790: 5(2x-9)/3-8=2x
Click here to see answer by mathstutor494(120)

Question 805898: This is a simple question but im questioning not sure if im correct
-Without graphing, tell how many x-intercepts the function has.
Y=-4x^2 -4x-6
I tried vertex form to find what x is
Is this corect -7 means that there is no real solutions so the answer would be , the function does not intersect the x axis. Or something else :/ please help asap im trying to review
The options are a:1 b 2 c:4 d:there is no x intercept and d none of the above
Click here to see answer by richwmiller(17219)

Question 805940: graph the equation y=2x-2
Click here to see answer by Alan3354(69443)

Question 805987: how do you find the point of intersection of two straight-lines if there are no numbers that ccan cancel each other out. Example: y = −6x − 8; y = 7x + 3
Click here to see answer by richwmiller(17219)

Question 806028: Our teacher put this on our assignment, I have never seen a problem like this,"William solved 1/2x-4=-3x+3, he solved by y=1/2x-4 and y=-3x+3. What is the value of x?". How is x solved, is my question.
(I do not know how to graph linear equations in the first place.)
Click here to see answer by richwmiller(17219)

Question 806047: What is the Ax + By = C form of y= -x + 4?
Click here to see answer by jim_thompson5910(35256)

Question 806088: how do you find the slope when the question is

Click here to see answer by rfer(16322)

Question 806109: Twice the sum of a number and 3 times a second numbers is 4. The difference of ten times the second number and five times the first is 90. Find the numbers.
Click here to see answer by mananth(16946)

Question 806331: (x2 + 34)�, (6x + 4)�, and (10x + 10)�. Which name best describes this triangle?
Click here to see answer by stanbon(75887)

Question 806433: What is the slope of the line. 4=x-7
Click here to see answer by edjones(8007)

Question 806484: Graph the expression 6(n-2)^2
Click here to see answer by Alan3354(69443)

Question 806479: A software manufacturer sells one of its products at $100 per license. The costs of producing and selling the software are $9,500 for development and $5 for making a compact disc (CD), packaging, shipping, and handling. Set up the cost and revenue functions, and use this information to determine how many licenses need to be sold for the company to break even.
Can someone explain this solution step by step please?
Click here to see answer by richwmiller(17219)

Question 806492: Find two points on line to be graphed and enter their coordinates . Y=5/4x-7.( 4,-2) need to know how to get second set

Click here to see answer by richwmiller(17219)

Question 806597: Slope = 2, Point = (3,5)
Click here to see answer by mananth(16946)

Question 806683: 2x+y=4
Find the intercepts and then use them to graph the equation.
Click here to see answer by rfer(16322)

Question 806757: Write y-9=-(x+2) in slope intercept form
Click here to see answer by solver91311(24713)

Question 806803: the question on my homework states:
what is the slope of the line containing f(5)=0 and f(-2)=10
i do know how to find slope, but im not sure what this f means, and how to find the slope with it. i have a test on this tomorrow so please help!
Click here to see answer by richwmiller(17219)

Question 806789: X + 3y = 12
Click here to see answer by Alan3354(69443)

Question 806753: y=-2x
Click here to see answer by ankor@dixie-net.com(22740)

Question 807194: Please help me to write y=3/4x+2 in standard form.
I know that I need the x and Y variables on one side with the constant on the other like this: 2x+3y=4.
I tried doing: 3/4x+y=2. Is this correct? Can you help me write y=3/4x+2 in standard form.

Click here to see answer by richwmiller(17219)

Question 807201: if (3,b) is a point on the graph of y=5x+5 what is b?
Click here to see answer by Alan3354(69443)

Question 807219: Can you please help me find the equation? The points go through (-1,2); parallel to the line x= 5
Click here to see answer by Alan3354(69443)

Question 807226: y-2=3(x-9)
Click here to see answer by Alan3354(69443)

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