Question

Y=–3x + 6 y=9

What is the solution to the system of equations?

(–21, 9)
(9, –21)
(–1, 9)
(9, –1)

Answer 1

Answer is C (–1, 9)

Edg2020

Answer 2

(- 1, 9 )

Explanation:

Given the 2 equations

y = - 3x + 6 → (1)

y = 9 → (2)

Substitute y = 9 into (1) and solve for x

9 = - 3x + 6 ( subtract 6 from both sides )

3 = - 3x ( divide both sides by - 3 )

- 1 = x

Solution is (- 1, 9 )