Question

Solve for system of equations using substitution

y=5x+3
y=x-9

Answer 1

x = -3

y = -12

Explanation:

y = 5x + 3 y = x - 9

x - 9 = 5x + 3

-4x - 9 = 3

-4x = 12

x = -3

Now put in -3 for x and solve for y

y = -3 - 9

y = -12