Question

How many points need to be removed from this graph so that it will be a function?

Answer 1

3 points
do you see how the x value -3 has two points (-3,2) and (-3, 3)

the x value should never repeat in order for this graph or any graph or table to be a function 

(-3,2) and (-3, 3)
one has to go....

(1,4) and (1,-4)
one has to go....

(2,-2) and (2,-4)
one has to go....

Answer 2

C.) 3 points because you can't have 2 points on the same y axis line.