Question 394807
f(x)=-2x^2+2x+5
.
x=-b/2a
=-2/-4
=1/2
The x-coordinate of the vertex is 1/2. Which is also the line of symmetry.
.
-2*.5^2+2*.5+5
=11/2
The y-coordinate of the vertex is 11/2 which is also the maximum.
.
Ed
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{{{graph(500,500,-10,10,-10,10,-2x^2+2x+5)}}}