Question

Can someone help me with this math homework please!

Answer 1

(B)

Explanation:

If you noticed, all the other input values have one input value that has two output values. This doesn't represent a function. Only (B) has one output for each input.

Hope that helps (●'◡'●)

Answer 2

2nd option

{(-8, -2), (-4, 1), (0, -2), (2, 3), (4, -4)}

Explanation:

For a function to exist, every value of input must have exactly one value of output.

The rest of the relations(1, 3, and 4) have 2 outputs for 1 input so they dont make a function.