Question

Solutions to 2-variable equations

Answer 1

Answer:

B) only (-3 , 3)

Step-by-step explanation:

y = -3x - 6

(-4,4)    y = -3 x (-4) - 6 = 12 - 6 = 6   .... incorrect

(-3,3)    y = (-3) x (-3) - 6 = 9 - 6 = 3   ..... correct

Answer 2

Answer:

B

Step-by-step explanation:

To determine which point is a solution, substitute into the left side of the equation and if it is equal to the right side then it is a solution.

(- 4, 4 )

- 3(- 4) - 4 = 12 - 4 = 8 ≠ 6 ← Not a solution

(- 3, 3 )

- 3(- 3) - 3 = 9 - 3 = 6 ← Solution

Thus (- 3, 3 ) is the only solution → B