Questions on Algebra: Systems of Linear Equations answered by real tutors!

Tutors Answer Your Questions about Linear-systems (FREE)

Question 792360: 3x + y = 10
3x - 2y = 16
Click here to see answer by Alan3354(69443)

Question 792739: In the linear equation x-2y=6, how do I get y alone so i can enter the equation into my graphing calculator?
Click here to see answer by psbhowmick(878)

Question 792767: We are trying to find a good source of help for son who is currently taking Algebra II.
Question: 3 = x + 2r
3/3 =3x/3
x = 1
Click here to see answer by psbhowmick(878)

Question 792914:
Solve using the multiplication principle.
-1/3 z = 1/4

Click here to see answer by rfer(16322)

Question 793661: how do I solve the equation for "y" to get into slope intercept form
x+3y=3 and x+y=1
Click here to see answer by josgarithmetic(39617)

Question 793706: Can someone help me solve this?
Solve the system by the elimination method.
x/3+3y/4=-3
x/3-y/4=5
Click here to see answer by stanbon(75887)

Question 793707: Can someone help me solve this?
Solve the system by the elimination method.
5x-y=-14+2x+y
7x+9y+4=3x+8y
Click here to see answer by simplemathlover(3)

Question 793707: Can someone help me solve this?
Solve the system by the elimination method.
5x-y=-14+2x+y
7x+9y+4=3x+8y
Click here to see answer by MathTherapy(10552)

Question 793995: What is 4(x+5)+4x=22
Click here to see answer by sunny1992(35)

Question 793995: What is 4(x+5)+4x=22
Click here to see answer by wilft1(217)

Question 794086: 5/2=P+12 /2p can i please get the working and answer
Click here to see answer by KMST(5328)

Question 794528: f(x)=2x+1 and g(x)3x-1/2 solve for g(f(3))
Click here to see answer by stanbon(75887)

Question 794785: Hi!
How do I solve the linear systems using substitution?
-2x+4y = 2
y= -6x +20
and
y= -4x+8
7x - 6y =-17
Click here to see answer by Cromlix(4381)

Question 795334: Graph without a calculator:
1) 3x - 2y = 8
2) 4x + 5y = 3
I know how to plot equation one using y = mx + b and I know the intersection point is (2, -1). However, equation two is giving me a headache and I have no idea how to plot (-4x + 3)/5, which has the same denominator.
Click here to see answer by Alan3354(69443)

Question 795477: My question is to "Graph the following linear inequality. 8x-9y<72", I've tried it but I seem to continue getting it wrong.
Click here to see answer by stanbon(75887)

Question 795477: My question is to "Graph the following linear inequality. 8x-9y<72", I've tried it but I seem to continue getting it wrong.
Click here to see answer by josgarithmetic(39617)

Question 795477: My question is to "Graph the following linear inequality. 8x-9y<72", I've tried it but I seem to continue getting it wrong.
Click here to see answer by waynest(281)

Question 795612: Solve by elimination:
2/3x + 3/4y = 11/12,
x/3 + 7/18y = 1/2
Click here to see answer by waynest(281)

Question 795381: Please help me solve this application of systems of linear equations problem:
Each course at a community college is worth 1 or 2 credits. A group of students is taking a total of 26 courses that are worth a total of 39 credits. How many 1- credit courses are being taken? How many 2- credit courses are being taken?
I know that I need a system of linear equations. I made x equal the number of 1 credit courses and y equal the number of 2 credits courses. The first linear equation I made from the information provided is x + y= 39, but that's as far as I got.
Click here to see answer by ankor@dixie-net.com(22740)

Question 795707: How do you set this word problem up?
Two numbers have a sum of 106. One number is 10 less than the other. Find the numbers.
Click here to see answer by Alan3354(69443)

Question 796142: What is 19-3x=28 im confused by the postition of the variable and how to solve it
Click here to see answer by Alan3354(69443)

Question 796142: What is 19-3x=28 im confused by the postition of the variable and how to solve it
Click here to see answer by epena(3)

Question 796155: there are x+5 trays. in every tray, there are 3x-1 eggs. how many eggs are there in all if x=5?
Click here to see answer by waynest(281)

Question 796155: there are x+5 trays. in every tray, there are 3x-1 eggs. how many eggs are there in all if x=5?
Click here to see answer by josgarithmetic(39617)

Question 796336: A line passes through the points(-10,-4)and (-1,2)
Click here to see answer by solver91311(24713)

Question 796376: 1) Find an equation of the line.Write the equation in standard form.
With slope of -4/7, through (5,3)
a) 7x+4y = -41
b) c) 4x + 7y = 41
c) 4x + 7y = -41
2) Find the slope of the line.
through (-3,3) and (-8,-9)
a. 6/11
b. 12/5
c.5/12
3) Find the slope of the line.
7x +y = -1
a. -1/7
b. 7
c. -7
4) Determine the slope and the y-intercept of the graph of 10x - 8y = 80
a. 4/5; (0,8)
b. -5/4; (0,-10)
c. 5/4; (0,-10)
5) Find an equation for the line.Write the equation in standard form.
Through the origin and (-8,-5)
a. -5x - 8y = 0
b. 5x - 8y = 0
c. -8x + 5y = 0

Click here to see answer by stanbon(75887)

Question 796667: Hi:
could anyone please see if they can solve "x":
-(x+7)/11 -(1-2x)/3=x
Thanks.
Click here to see answer by lwsshak3(11628)

Question 796644: the concession stand at an ice hockey rink had receipts of $7200 from selling a total of 3000 sodas and hot dogs. if each soda sold for $2 and each hot dog sold for $4, how many of each were sold?
Click here to see answer by Cromlix(4381)

Question 796732: Graph each system of equations and describe it as consistent and dependent, or inconsistent.
y = -3x
y = -3x + 2
Click here to see answer by psbhowmick(878)

Question 796904: If 10y = 46,then 5y =
Click here to see answer by rfer(16322)

Question 797126: Question 1: The sum of two numbers is 15 and their difference is 9. Find the two numbers.
Click here to see answer by mohanraj04(12)

Question 797755: what is the equation for the sum of 198 and 65
Click here to see answer by edjones(8007)

Question 797751: 2x-y=2
3x-2y=1

Click here to see answer by edjones(8007)

Question 798014: Can you please help me solve this simultaneous equation by substitution method?
x+y=0.5
x-y=1

Click here to see answer by KMST(5328)

Question 798101: ok, i have tried every way my teacher showed , not many,but doesn't come out right: i get the weirdest fraction ever!! i am failing his class he treats us girls badly, i just need a passing grade and this homeworkis what i need
the homework sheet says:
Write the slope-intercept form of the equation of the line described
1) trough: (5,4), parallel to y=3/5x -1
Click here to see answer by josgarithmetic(39617)

Question 798314: write an equation of the line through (-3,2) and perpendicular to x+4y=16. Write the equation in the form x=a , y=b , or y=mx+b
what is the equation of the line ?
Click here to see answer by richwmiller(17219)

Question 798539: 1/2y-3/4=5/3y+1
Click here to see answer by jackaly(1)

Question 798957: determine the graphically the x value when y =5 in the given equation.
-x+3y=12
the x value when y =5 is x =
Click here to see answer by solver91311(24713)

Question 799448: how do I know if 5x + 6y = 3x + 2 is a linear equation or not

Click here to see answer by solver91311(24713)

Question 799455: Scenario: You have just graduated from college, and you have started your first big project at your new job. Your boss informs you that you are responsible for the Equations and Inequalities section of the project and for presenting your ideas to the team. Prepare for the meeting by discussing the following:
Part I: Provide a 1-variable linear equation of your own creation. (If you are struggling with coming up with an example, feel free to find one in your textbook.) Explain the techniques, and show the steps used for solving the equation. Check that your solution is correct.
Part II: Using the same 1-variable linear equation that you created in Part I, change the linear equation to a linear inequality (Use either < or >). Explain the techniques, and show the steps used for manipulating the linear inequality. Check that your solution is correct.
Part III: In 1 paragraph, summarize your results by discussing the following:
Interpret the solution to the linear equation and inequality, and explain the differences in your results. Explain how you know if a value is a solution for the inequality.
Click here to see answer by solver91311(24713)

Question 799891: solve the following system using substitution
y=-3x+4
y=2x-11
Click here to see answer by ankor@dixie-net.com(22740)

Question 800426: a cheetah runs 65 mph
a gazelle runs 47 mph
1. A cheetah and a gazelle are running at their top speeds. The cheetah is one mile behind the gazelle. Write an expression for the distance the cheetah must run to catch up with the gazelle.
2. Write and solve an equation that represents how long the cheetah will have to run at top speed to catch up with the gazelle.
Click here to see answer by josmiceli(19441)

Question 800656: Which value of b will make the system y=2x+2 and y=2.5x+b intersect at the point (2,6)?
Click here to see answer by josgarithmetic(39617)

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