Which set of points represents a function?
a. (7, 1), (1, 2), (5, 3), (7, 3), (6, 3)
b. (1, 7), (6, 1), (7, 3), (4, 9), (6, 3)
c. (2, 1), (2, 4), (5, 3), (4, 9), (6, 3)
d. (1, 7), (2, 1), (5, 3), (4, 9), (6, 3)

The correct answer is D since a function can only map one input one output.

D

Step-by-step explanation:

D would be the correct answer because the x values have their individual y values. D is the only answer where the x point doesn't repeat, and the only time it can repeat is if the x points have the same y value such as: (2,4) (2,4)

-4

step-by-step explanation:

do 6-10=

if u need it to be negative.

its a straight line parallel to the time axis