Question

If y − 3 = 3x, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?

{(0, 3), (1, 6), (2, 9)}
{(3, 0), (6, 1), (9, 2)}
{(1, 3), (2, 6), (3, 9)}
{(3, 1), (6, 2), (9, 3)}

Answer 1

{(3,0),(6,1),(9,2)}

because when you plug in the values you get

3-3=3(0) = 0=0

6-3=3(1) = 3=3

9-3=3(2) = 6=6

Answer 2

• A. {(0, 3), (1, 6), (2, 9)}

Explanation:

Rewrite the function in the slope-intercept form:

• y - 3 = 3x
• y = 3x + 3

The ordered pairs:

• x = 0 ⇒ y = 3 ⇒ (0, 3)
• x = 1 ⇒ y = 6 ⇒ (1, 6)
• x = 2⇒ y = 9 ⇒ (2, 9)
• x = 3 ⇒ y = 12 ⇒ (3, 12)

Correct set is A