Question

True?

Answer 1

use the vertical line test

draw a vertical line on the graph
if it goes through 2 points, it is not a function

a graph of a function, can only out put 1 y value, per x value

so if I had x=2, and ended up with y=2, y=-2
then I know it is not a function

Answer 2

just assume that my graph looks exactly the same as yours, I tried lol

Answer 3

then the vertical line test I would draw a vertical line on this

Answer 4

Lol pretty close

Answer 5

Okay so I would draw a vertical line on this

Answer 6

since that vertical line gave me 2 y values, for 1 x value

Answer 7

It is not a function right

Answer 8

(because a vertical line is a line of x=a, where a is any number I choose)

Answer 9

because it gave you two values

Answer 10

it is not a function

correct!