Question

Find the vertex, line of symmetry, and the minimum or maximum value.
f(x)=8-x^2

Answer 1

yeah never heard of that

Answer 2

rewrite in standard form
f(x) = -x^2 + 8

line of symmetry: (x-coord of vertex)
x = -b/2a

If a is negative, parabola opens down --> maximum
if a is positive,parabola opens up --> minimum

Answer 3

Ok. what do you mean in standard form? Like (2,8)?

Answer 4

standard form of a quadratic equation
\[ax^{2} +bx+c \]

Answer 5

hmmm.

Answer 6

I guess I don't know how to do that.