Question

What is the solution to the linear system y=-5x-21 and y=7x+15

Answer 1

(-3, -6).

Explanation:

Since both expressions in x are equal to y:

-5x - 21 = 7x + 15

-12x = 36

x = -3.

Plug x = -3 into the first equation:

y = -5*-3 -21

= 15 - 21

y = -6.

y =

Answer 2

(-3,-6)

Explanation:

Compair, then solve for x=-3

then solve you should get y=-6