Question

question 2 is this a function? (2,4),(1,1),(0,0),(1,-1),(2,4)

Answer 1

no
there are multiple y values for 1 x(twice)

Answer 2

Hello!

The correct answer is no, because it has 2 repeating x values, because if a set of points have a repeating x value, it's not a function.

Hope this helps! ☺♥