<span>f(x) =-(x+9)(x-21)
Manipulating algebrically,
We get,
</span>f(x) =-(x+9)(x-21)
= -(x^2 -21x + 9x - 189)
= -(x^2 -12x - 189)
= -x^2 + 12x + 189
Axis of symmetry = -b/2a
plugging the values,
x = -12/-2
= 6
I'm guess it 5 because you need to find you greatest common factors
I believe the answer is (-5,-3) because they are both equidistant from the y axis
Answer:
false
Step-by-step explanation:
If the vertical line hits more than 1 point it is not a function because the x value cannot repeat in order for it to be a function