Question

Select all ordered pairs that correspond to input-output pairs for the function y = 3x - 2.

(-2, 0)
(-1, -5)
(0, -2)
(2, 3)
(-3, -11)

Answer 1

(-1, -5)

(0, -2)

(-3, -11)

Explanation:

y = 3x - 2.

→ 3×(-2)-2=-8 ≠0 ⇒(-2, 0) doesn’t correspond to input-output pairs for the function

→ 3×(-1)-2=-5 ⇒(-1, -5) corresponds to input-output pairs for the function

→ 3×(0)-2=-2 ⇒(0, -2) corresponds to input-output pairs for the function

→ 3×(2)-2=4≠3 ⇒(2, 3) doesn’t correspond to input-output pairs for the function

→ 3×(-3)-2=-11 ⇒(-3, -11) corresponds to input-output pairs for the function