is this a function

Answer: No
Step-by-step explanation:
The -5 in the x value repeats itself. There can only be one x value for it to be a function.
Answer:
No
Step-by-step explanation:
It does not pass the vertical line test.
Vertical Line Test -Draw | anywhere at an x -coordinate and no x should repeat, we can see in the picture that two points have the x=coordinate of -5