SOLUTION: Given the pair of linear equations in two variables: Find the x- and y-intercepts (if any) for each line. Show your work. Plot those intercepts, and graph the two lines on the

Algebra ->  Linear-equations -> SOLUTION: Given the pair of linear equations in two variables: Find the x- and y-intercepts (if any) for each line. Show your work. Plot those intercepts, and graph the two lines on the       Log On


   



Question 263074: Given the pair of linear equations in two variables:
Find the x- and y-intercepts (if any) for each line. Show your work.
Plot those intercepts, and graph the two lines on the same chart. Submit your graph through the Dropbox.
Apply elimination or substitution to find the coordinates of the point of intersection (if there are no solutions or infinite solutions, state this). Show your work.
5x - 8y = 34
7x + 2y = 8

Here is how I did it, I just want to know if I did it correctly.
5x - 8y = 34
x = 0 5(0)-8y = 34
-8y/-8 = 34/-8 = 17/-2
y = 0 5x - 8(0) = 34
5x - 0 = 34
x = 34/5
7x + 2y = 8
x = 0 7(0) + 2y = 8
2y = 8
y = 4
y = 0 7x + 2(0) = 8
7x = 8
x = 8/7
I will use the elimination system to find the intersection.
5x - 8y = 34
28x + 8y = 32 I multiplied this by 4 to eliminiate y. Now I will add them.
33x = 66
x = 2
5(2) - 8y = 34
10 - 8y = 34
-8y = 24
y = -3
The intersection is (2,-3)

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
x and y intercepts look right
intersection of the two lines looks good.
good job