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OpenStudy (anonymous):
The graph reaches it's maximum when x=2. What is the y value of this maximum?
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OpenStudy (anonymous):
What is the equation of the graph?
OpenStudy (anonymous):
y=-x^2+4x
OpenStudy (anonymous):
You just have to plug in.
Directrix (directrix):
y=-x^2+4x y = - ( 2 ) ^ 2 + 4 ( 2 ) y = ?
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