Which of the following relations describes a function?

A. (0,0),(1,1), (1,-1),(4,2)
B. (-4,2),(-1,-1),(-1,1),(0,0)
C. (0,0),(1,1),(4,2),(9,3)
D. (0,0),(1,1),(2,-2),(2,2)

i need the options

step-by-step explanation:

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.

answer is  

d.

a circle

i got it down for you chief.

32500

step-by-step explanation:

3.25*10000