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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 524629: what is the slope and y-intercept of -x/2 - 6=3/2y
Click here to see answer by oberobic(2304)

Question 524632: how do i write the linear equations in slope -intercept form for 16=0.5x-2y-2
Click here to see answer by stanbon(75887)

Question 524632: how do i write the linear equations in slope -intercept form for 16=0.5x-2y-2
Click here to see answer by oberobic(2304)

Question 525215: how do you find the equation of a line that has the slope and passes through the given point?
m = 2; (3,2)
Click here to see answer by tarungehlot(9)

Question 525325: 4x+5y=6
6x-7y=-20
Click here to see answer by stanbon(75887)

Question 525778: m+n=20
m-n=-4
Click here to see answer by Alan3354(69443)

Question 525855: Is 1/2y=1 a linear equation?
Click here to see answer by jim_thompson5910(35256)

Question 525824: 5.25+x=3.75

Click here to see answer by Tatiana_Stebko(1539)

Question 525824: 5.25+x=3.75

Click here to see answer by dango24(4)

Question 526550: How would you solve these two problems by doing subsitution 2x-3y=9 and 5x+2y=-6

Click here to see answer by Maths68(1474)

Question 526644: x+2y-z=6
-x+y+3z=5
x+2y+2z=9
Im not sure what its called exactly what were working on, but you have to solve for x,y, and z in all of the equations.
Click here to see answer by KMST(5328)

Question 526698: Dear available tutor:
Here is my homework problem I'm trying to solve.
A=a+b+c divided by 3, solving for c. (A=average)
How do we solve?
Click here to see answer by jim_thompson5910(35256)

Question 526886: i am having a difficult time trying to solve:
6x - 9y= 25.5
7y - 3x= -14
i cannot figure out what i need to do to get the x's and y's to line up in order to solve the equation...
Click here to see answer by InfantileBear(2)

Question 527123: 46-(2x+1)<3(x+5)+x
Click here to see answer by jim_thompson5910(35256)

Question 527602: x+y=2
x-y=4
Click here to see answer by stanbon(75887)

Question 527608: Math 150 Find all of the real zeros and write the polynomial as a product of linear factors. Show all work.
x,cubed - 11x,squared - 15x + 325

Click here to see answer by stanbon(75887)

Question 527961: how do you solve systems when their is fractions
Click here to see answer by jim_thompson5910(35256)

Question 527983: graph the linear equation
x+4=0
Click here to see answer by jim_thompson5910(35256)

Question 527922: i am having trouble understanding why a staircase with an 8.5" riser & 9" treads has a slope of 17/18. i know m = rise/treads = rise/run = (y2-y1)/(x2-x1) but i keep getting zero??
Click here to see answer by Alan3354(69443)

Question 528039: How do you solve for y and x ? Like my promblem says solve for y right? So they gave me the promblem 4y + 12 = -3(2x-4), could you help me with this promblem?
Click here to see answer by josmiceli(19441)

Question 528167: Can you please help solve the systems of equations by substitution?
5x+y=8
y=3x
Click here to see answer by Alan3354(69443)

Question 528174: Can you please help me solve/understand the system of equations by substitution? Thanks!

32x-4y=20
y=8x+5
Click here to see answer by solver91311(24713)

Question 528168: Can you solve the system of equation by substitution?
x-8y=-23
5y-2x=2

Click here to see answer by Maths68(1474)

Question 528220: solve the following sysem ofequations.
x+3=5(1)
x=3-3y(2)
What is the solution of the system?

Click here to see answer by Maths68(1474)

Question 528267: can you solve for x and y with these.
y=2x and 6x-y=8
Click here to see answer by scott8148(6628)

Question 528390: 13x-11y=-12
Click here to see answer by Alan3354(69443)

Question 528396: linear algebra elimination method
13) 2/3x+2/5y=4/5
1/2x+2/3y=-1/2
12)9/14x+y=19/7
-20x+21y=144
11)x+5/3y=7/3
2/5x-y=3/5
10)x+9/4y=7/4
5/9x-y=2/9
8)18x-3y=-3
6x+7y=39
6)15x+14y=2
12x-6y=-7
Click here to see answer by Edwin McCravy(20056)

Question 528732: the length of a rectangle is 20ft. less than twice the width. of the perimeter of the rectangle is 260ft. find the length and width of the rectangle

Click here to see answer by mathstutor494(120)

Question 529048: how would you solve this to graph?
3x-y=-2
3x-y=0
Click here to see answer by solver91311(24713)

Question 529222: how to solve this 2x+3y=17
Click here to see answer by lmeeks54(111)

Question 529326: when y = 3, which of the following is false
y is prime and y is odd
y is odd or y is even
y is not prime and y is odd
y is odd and 2y is even
Click here to see answer by stanbon(75887)

Question 529302: Dear tutors:
I have 3 problems due this evening involving using set builder notations
1) x+2 is greater than/equal to -3/11
2) -5/6x > 4/11
3) -10 (x+1) is less than/equal to 12x+7
Any help is appreciated.
kathrynneconway@yahoo.com

Click here to see answer by nerdybill(7384)

Question 529465: Determine whether the point (0, -8) is a solution of the system
-3x + 9y = 72
9x + 3y = 24
by substituting the point into each equation.

Click here to see answer by stanbon(75887)

Question 529411: I hope it is not too late in the evening to ask a question. But can someone
solve this equation by clearing the fractions?
-x+2/5=5-4/3x
Thanks
kathrynenconway@yahoo.com
Click here to see answer by ankor@dixie-net.com(22740)

Question 529563: Use elimination method to find all solutions of the system of equations.
8x+4y-112
40x+2y=380
Click here to see answer by lmeeks54(111)

Question 529564: Use elimination method to find all solutions of the systems of equations.
4x^2-y^2=75
x^2+5y^2=150
Click here to see answer by ankor@dixie-net.com(22740)

Question 529758: is 9x-8=3(x+1) a linear equation?
Click here to see answer by jim_thompson5910(35256)

Question 529767: Elimination

5x+y=9
10x-7y=-18

Click here to see answer by swincher4391(1107)

Question 530090: Use the method of substitution to solve the system. (Enter your answer(s) as ordered pair(s). If there is more than one ordered pair, use commas between ordered pairs.)

y2−4x2=19
9y2+16x2=275

Click here to see answer by unlockmath(1688)

Question 530140: A boat takes 4 hours to travel 36 miles downstream and 12 hours for the return trip. What is the speed of the current and the speed of the boat in still water?
Click here to see answer by KMST(5328)

Question 530089: Use the method of substitution to solve the system:(Enter your answer(s) as ordered pair(s). If there is more than one ordered pair, use commas between ordered pairs.)
xy=2
5x-y+9=0
Click here to see answer by ankor@dixie-net.com(22740)

Question 530221: solve by substitution y=0.5x+2 and -y=-2x+4
Click here to see answer by jim_thompson5910(35256)

Question 530230: solve by substitution x+2y=8 and x+3y=12
Click here to see answer by jim_thompson5910(35256)

Question 530229: solve by substitution 2x+2y=2 and -4x+4y=12
Click here to see answer by user_dude2008(1862)

Question 530226: solve by substitution 4x=y-1 and 6x-2y=-3
Click here to see answer by user_dude2008(1862)

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