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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 132037: use the graphing method to solve the linear system and tell how many solutions the system has
x-7y=10
-6x+4y=-22
Click here to see answer by jim_thompson5910(35256)

Question 132198: Kay spends 250min/wk excercising. Her ratio of time spent on aerobics to time spent on weight training is 3 to 2. How many miunutes per week does she spend on aerobics? How many hours per week does she spend on weight training?
Click here to see answer by josmiceli(19441)

Question 132197: The math club and the science club had fundraisers to buy supplies for a hospice. the math club spent $135 buying 6 cases of juice and 1 case of bottled water. The science club spent $110 buying 4 cases juice and 2 cases bottled water. How much did a case of jucie cost? How much did a case of water cost?
Click here to see answer by josmiceli(19441)

Question 132471: Y=5X+5
Y=15X-1

Click here to see answer by jim_thompson5910(35256)

Question 132507: i dont understand

Click here to see answer by jim_thompson5910(35256)

Question 132508: what is 4x-y-7=0 written in standard form with interger co efficients

Click here to see answer by jim_thompson5910(35256)

Question 132598: If a certain positive number is added to 4 times the reciprocal of 10 less than the number, the result is 5. What is one of the numbers?
a. -6
b. -10
c. -9
d. 4
Click here to see answer by ptaylor(2198)

Question 132639: how do you write the slope is 3; the y-intercept is -2. in slope-intercept form

Click here to see answer by mathispowerful(115)

Question 132813: When solving a linear inequality, do you always need to solve for y? Why or why not?
Click here to see answer by solver91311(24713)

Question 132895: solve the system of equations by the elimination method
{-x-2y=-4
5x+10y=8
Click here to see answer by jim_thompson5910(35256)

Question 132893: I need help solving this equation using the elimination method.

Click here to see answer by jim_thompson5910(35256)

Question 129270: I am trying to learn the substitution method.
I do not understand the steps.
Here is my problem;
2x-3y = 12
x = 4y + 1
Click here to see answer by brikay0299(3)

Question 129270: I am trying to learn the substitution method.
I do not understand the steps.
Here is my problem;
2x-3y = 12
x = 4y + 1
Click here to see answer by jim_thompson5910(35256)

Question 133010: I can't figure out what the system x=y-4.2 and 2x-3y=-9 can be solved as.
Click here to see answer by jim_thompson5910(35256)

Question 133058: I am having problems with the following system of equations. The elimination method is supposed to be used, and the solution is to be in the form of integers or fractions.
.03x-0.2y=4
.04x+0.5y=63/19
Thanks!
Stephanie
Click here to see answer by vleith(2983)

Question 133069: Please solve
y-(9y-8)=5-2y-3(2y-3)+29
Click here to see answer by jim_thompson5910(35256)

Question 133336:
Could you please help me solve system of equations
5x + 3y =5(4-x) AND 2x - 5y = -(y + 11)/2
Click here to see answer by checkley71(8403)

Question 133399: Could someone please help me with this problem. I need to find the equation of the line parallel to 2y = -x + 3 which passes through (0,4)

My solution was to simplify 2y = -x + 3
So I tried 2y/2 = -x/2 + 3/2
so I came up with y = -x/2 + 3/2 but I am yucky with fractions. Could someone tell me if I am on the right page or not?
Click here to see answer by stanbon(75887)

Question 133406: Okay could I please get help with this one. I've to a certain point and have gotten stuck. I need to find the equation of a line that passes through points
(0,2) and (4,4)
This is what I have done so far.
first to find the slope I used m = 4 -2/4-0
The intercept would be 2/4
now for the point slope of the line I used y-2 = 2/4 (x + 0)
y -2 = 2/4x + 2/4
y-2 + 2 = 2/4x + 2/4 + 2
y = 2/4x + this is where I have gotten lost
I would appreciate the help
Click here to see answer by jim_thompson5910(35256)

Question 133426: What is the slope of the line x=2?
Click here to see answer by checkley71(8403)

Question 133469: if 1ST is one tile and 2nd is three tiles , 3rd is five tiles ,4th is seven tiles. write an equation for the number of tiles,t, needed to make the nth figure.
Click here to see answer by vleith(2983)

Question 133457:
Could someone please help me solve the system of inequalities
5(-x+1)+6<=6 and 5(x -1) + 6 <=6?
Thanks in advance
Click here to see answer by checkley71(8403)

Question 133455:
Could someone please help me with the slope intercept equation of the line that contains points (5,17) and (9,13?

Click here to see answer by checkley71(8403)

Question 133485: I would love to have some help with solving this system of equations using the substitution method. Thanks!

x + y = 2
x = 4y + 5

Click here to see answer by oscargut(2103)

Question 133485: I would love to have some help with solving this system of equations using the substitution method. Thanks!

x + y = 2
x = 4y + 5

Click here to see answer by solver91311(24713)

Question 133477: I need some assistance with the following word problem please.

On Tuesday the weather in Winston, ND, was �2 degrees F. That night the temperature dropped another 17 degrees F. During the day on Wednesday the temperature rose 11 degrees F to reach that day�s high. What was the high temperature on Wednesday?

Click here to see answer by cuteminiming(5)

Question 134310: I have been having alot of trouble with this question. I have to find out what numbers x and f. This is the problem.
2(F+8)-3x=-12.
So far i have this much done.
2(F+8)-3x=-12
2F+16-3x=-12
Please help me out with this problem.
Click here to see answer by MathLover1(20850)

Question 133070: Please solve
-5/6x < or equal to 3/4 +8/3x
Click here to see answer by Juhi(44)

Question 134457: solve the linear equation by using the elimination method.
x + 2y=2
1/2x + 1/3y=1
Click here to see answer by vleith(2983)

Question 134457: solve the linear equation by using the elimination method.
x + 2y=2
1/2x + 1/3y=1
Click here to see answer by jim_thompson5910(35256)

Question 134461: solve by using elimination method
x+2y=4
1/2x + 1/3y=1
Click here to see answer by jim_thompson5910(35256)

Question 134625: find an equation of the circle passing through the points (1,3),(-2,6),(4,2)
Click here to see answer by solver91311(24713)

Question 134719: This is the equation 4x+3Y=12. The instructor picked the three coordinates
a. X is 0, Y is 4 - I understand the equation for this
b. X is 3 and Y is ) Do not understand how the equation was solved with the Y being 0?
c. X is 4 and Y is -1.33 or -4/3 . Again how was the equation solved to get this coordinate
Thank you
Click here to see answer by vleith(2983)

Question 134806: Can you help me solve for x
mx(squared)=5x
Click here to see answer by solver91311(24713)

Question 134802: Can you help me solve:
3b-a=-7
5a+6b=14
Click here to see answer by josmiceli(19441)

Question 134802: Can you help me solve:
3b-a=-7
5a+6b=14
Click here to see answer by algebrapro18(249)

Question 134930: Are all linear equation functions?
Is there an instance when a linear equation is not a function?
Can you give an example of and nonlinear equation?
Click here to see answer by vleith(2983)

Question 134936: Could you please help with the following problem. It needs to be solved using the elimination method. The answer that I calculated is not what the book shows. Thanks.
x^2+y^2=16
4x^2-9y^2=36
The answer must be in square root format (different form what the book asks for)
Click here to see answer by vleith(2983)

Question 135052: How do I translate to a system of equations and solve?
A collection of nickels and dimes is worth $16.05. There are 218 coins in all. How many are nickels and how many are dimes?

Click here to see answer by vleith(2983)

Question 135066: How do I translate to a system of equations and solve?
Corrin is 23 years older than Beth. In 9 years, Corrin will be twice as old as Beth. How old are they now?
Click here to see answer by checkley77(12844)

Question 135340: I have three questions if that is ok.

Solve for x: 5x - 12 = 4x + 5
Solve for x: -3(4x+3)-2 = 7 -2x + 3
Solve for x: (x + 3)/4 - 3/2 = (x + 4)/8
thank you in advance for you help
Click here to see answer by checkley77(12844)

Question 135392: Solving Systems of Linear Equations by the Substitution Method.
I am having a difficult time understanding how to do this. I was hoping someone could help me.
The problem is: 2x+3y=7
x=2
So would it be 2(2)+3(y)=7? How do I get y?
4+3y=7 I would think that y would equal 1 since 3*1=3+4 would equal 7
However, I am not sure if this is the way the problem needs to be worked out.
Will you please help me understand this? Thank you!
Click here to see answer by stanbon(75887)

Question 135393: Solving Systems of Linear Equations by the Substitution Method.
I am having a difficult time understanding how to do this. I was hoping someone could help me.
The problem is: y=x-3 x+y=5

x+x-3=5 if I am reading the problem right.
But I am not sure where to go after that.
Will you please help me understand this? Thank you!
Click here to see answer by stanbon(75887)

Question 135395: Solving Systems of Linear Equations by the Substitution Method.
I am having a difficult time understanding how to do this. I was hoping someone could help me.
The problem is: y=4-3x 3x+y=5

But I am not sure where to go after that.
Will you please help me understand this? Thank you!
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