Which of the following represents a relation that is not a function? A.
x-7-5-71
y33313933

B.
x8-513-7
y33313933

C.
x-7-5-11
y33313933

D.
x-7-5813
y33313933

C.

x-7-5-11

y33313933

Step-by-step explanation:

think so

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus