Question

Which of the following does not represent a function?

graph of positive parabola oriented about the y axis with y intercept at negative 5

graph of a line with negative slope through the origin

graph of an absolute value function

graph of a parabola symmetric about the x axis with x intercept at negative 5

Answer 1

You can determine if a graph is function if there are never multiple y-values at any particular x-value.

Take a look at the attached graph, it is not a function because there multiple y-values at ever x-value.

Answer 2

oh ok so would it be the last one?

Answer 3

Yes, the graph I provided is of the last option, or x=y^2