Math: Algebra 2

Question

How would you graph y=-x2+2x+5 as a function and if a>0 find the maximum and if a<0 find the minimum value.

Answer 1

Since a is negative, this graph will open downward and will have a max value, not a min. When I graphed this on my graphing calculator, the max value is at the vertex, which is (1,6)