Question

Solve the system of linear equations.7x + 2y = -88y = 4x

Answer 1

7x + 2y = -8 Equation 1.

8y = 4x​ Equation 2.

We solve for y in eq. 2; as follows:

y = 4x/8.

Now we replace y on eq. 1:

7x + 2(4x/8) = -8

7x + x = -8

8x = -8

x = -8/8

x = -1

Finally we replace x on eq 2:

8y = 4(-1)

8y = -4

y = -4/8

y = -1/2