No it isn't.
Explanation:
x/y * y = (y-6) * y
x = y^2 - 6y
A function gives just one y for every x
In this case there will always be 2 y's for every x
Example:
y can be
y = 6
or
y =−6
(0,-6) & (0,6)
They must have the same variable with the same exponent. The coefficient doesn't matter much.
Answer: D
Step-by-step explanation: Im vv sure, is this a test?