Originally Posted by

**mjfuentes85** I have this question:

which point on the graph of y = 4 - x^2 are the closest to the point (0,2)?

i know the graph is going to be a downward parabola mirrored across the y axis started at the point 4, the point (o,2) is inside the parabola.

For this problem do I just take the derivative and then evaluate the the x value of zero ? Can anyone explain the concept of this problem ?

I know the derivative will give me the tangent line to the curve, Then whats my next step?

-Marcus