Question

For each of the following, determine whether the equation defines y as a function of x .
see picture

Answer 1

i know a function can't have repeating y values right?

Answer 2

i think they are all functions

Answer 3

The equation does not defines y as a function of x when some value(s) of x have more than one y

Answer 4

the 3rd one is not a function because it satisfies the condition just posted by math&ing001

Answer 5

y^2 right?

Answer 6

thanks