Question

Line one has the equation 7x - 4y = - 28 and line two
has the equation 3x + 4y = - 12.
Find the point of intersection for the two lines.
Enter as ordered pair: (1, 2)

Answer 1

7x - 4y = -28

3x +4y = -12

Using the elimination method because y is already eliminated

10x = -40

So x = -4

Then plug the -4 into the first equation....

7(-4) - 4y = -28

-28 - 4y = -28

-4y = 0

y = 0

I got:  -4,0