X=y2 is this equation a function?

No it isn't.

Step-by-step explanation:

A function gives just one  

y

for every  

x

.

In this case there will always be two  

y

's for every  

x

, because the reverse will be  

y

=

+

√

x

or

y

=

−

√

x

Example:  

x

=

4

→

y

=

−

2

or

y

=

+

2    

21 i watched a 3 hr vid explaining it

step-by-step explanation:

du what else would it be

brainliest

answer is x<