Question

Tell me if I am right

Find the vertex,line of symmetry,and the minumum/maximum value of the quadratic function

f(x)=-2x^2+2x+4

x-corrdinate is 9/2
y is 1/2
equation of line of symmetry is x=1/2
maximum is 9/2

Answer 1

i think you have the x and y backwards

Answer 2

so the line of symmetry would be x=9/2?

Answer 3

no i confused you i think
the axis of symmetry is what you wrote
\[x=\frac{1}{2}\] and the maximum you also have right. it is
\[\frac{9}{2}\]

Answer 4

those two are correct

Answer 5

oh, ok. i just have the x and y switched around then?

Answer 6

but you wrote "the x - coordinate is 9/2" but that is the y - coordinate

Answer 7

first one is x, second is y. so vertex is
\[(\frac{1}{2},\frac{9}{2})\]

Answer 8

good job though!