if you mean to plot it on a graph like this:
y = 4x2
Then yes. It opens upward away from the x-axis, with it's focal point at (0, 0)
2
-1
The GCF is 4x.
(4x - 7y)(4x + 7y)
It is 1/(4x)2
8x squared
2
It is: 4x squared
0
She isn't. 4x squared is 4 times (x squared). That is, 4 times (3 squared) = 4 times 9. If you want it to be the square of 4x (which would be the square of 4 times 3, ie, 12), you have to write it as (4x)squared.
2
If you mean: 4x squared+7x+4 then the discriminant is -15