Question

Is this relation a function? Justify your answer.

A. Yes because every x- and y-value is positive.

B. No because two points with the same y-value have different x-values.

C. No because two points with the same x-value have different y-values.

D. Yes because the number of x-values is the same as the number of y-values

Answer 1

C. No because two points with the same x-value have different y-values.

Explanation:

(view my screenshot attachment too please)

A function can't have same x-values that appear for multiple different y-values.

In the diagram, (10, 6) and (10, 9) indicate that it isn't a function.

This is because the same 10 appears twice (x-value) but with multiple different y-values (6 and 9).

Answer 2

Ima go with C, “No, because two points with the same x-value have different y-values