Question

What is the axis of symmetry for f(x) = −3x2 + 18x − 7?

Answer 1

3 is the axis of symmetry because of the equatio -b/2a and since two negatives simplyfy this becomes a positive

Answer 2

The formula for axis of symmetry is
`- (b)/(2a)`.
We insert the values into our function. :
`- (18)/(2(-3))` This equals
`- (18)/(-6) =3`
x=3 is the axis of symmetry.