Question

Does the graph f(x)=-2x^2 -1 have a maximum or a minimum? Explain.

Answer 1

It has a maximum

Explanation:

The way I think about it is looking at "a" (the leading variable's coefficient, so __x²), if it's negative, the graph is a frown, but if it's positive, it's a smile. In this case, a is -2, so the graph would have the shape of a frown, which has a maximum.

I hope this helped!