Question

Helppppp please i don’t get this at alll !!!!!!!!!!!

Answer 1

The answer is D

Explanation:

If there is no repetition of values in the domain ( i.e values of x coordinate), then the pairs is a function.

( x, y)

( -9, 8)

( -5, -8)

( -7, 8)

( -6, -8)

The values of x in each pair is different. So it's a function.

Answer 2

The correct answer is D {(-9, 8), (-5, -8), (-7, 8), (-6, -8)}

Explanation:

Set A is not a function because there are 2 ordered pairs in which x = -12.

Set B is also not a function because there are 2 ordered pairs in which x = 8, and x = -8.

Set C is also not a function because all of the ordered pairs have the same x value of 13.

That is why Set D is the correct answer.

In the attached images, I graphed the Vertical Line Test I did on all sets to show why Set D is the only function.