Answer:
4y²-1/4 is the required answer
Step-by-step explanation:

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)
You can do
70 x 6000
and
6000 x 70
=420000
<span> As the x-values go to negative infinity the functions values go to positive infinity</span>