Question

Solve the system of equations using substitution. y = 4x y = 8x + 8 (−3, −12) (−2, −8) (2, 8) (3, 12)

Answer 1

Answer:(-2,-8)

Explanation:

if you use a graph and find where they intercept that will give you the answer use desmos graphing

Answer 2

(- 2, - 8 )

Explanation:

y = 4x → (1)

y = 8x + 8 → (2)

substitute y = 8x + 8 into (1)

8x + 8 = 4x ( subtract 4x from both sides )

4x + 8 = 0 ( subtract 8 from both sides )

4x = - 8 ( divide both sides by 4 )

x = - 2

substitute x = - 2 into (1)

y = 4x = 4(- 2) = - 8

solution is (- 2, - 8 )