Question

Does the following graph represent a function?​

Answer 1

Explanation:

no.

in a function every x-value has exactly one associated y- value.

but this is clearly violated for x between about -4.5 and -3.5, where every x-value has 3 different associated y-values.

e.g. at x = -3, we get y = 0.5, -2 and -4.25.