Find and solve an equation to find the value of .
Use the fact that is a square:
For any function , is the -coordinate of the -intercept.
This implies that when is the length of the line segment from the origin to the -intercept of .
Since is the origin and is the -intercept of ,
Since is a square,
Use the fact that is a parabola:
is located at and is located at .
If is the vertex of and , then is half-way between and
Recall that when and the vertex of , then .
So, if and , then