Im offering 20pts for 2 questions and brainliest answer

question 3
oliver is doing a study on age and shoe size. he has collected the data shown above.

do the ordered pairs (x, y) he has collected form a function?

a. no, because for some x's there are more than one y's.

b. yes, because for every y there is only one x.

c. yes, because for every x there is only one y.

d. cannot be determined

question 4
the diagram shows a relation. which y-value corresponds to an x-value of -1?

a. 8

b. 2

c. 0

d.−4