Question

Let f(x)=-6x^3+6x^2-9x-7. Write a function g that is the reflection of f(x) across the y-axis? Can someone answer this question?

Answer 1

i answered this question!!

Answer 2

To reflect something across the y axis you have to substitute -x for x.

Answer 3

I tried replacing x with -x but I got confused can you explain a little more?

Answer 4

-6x^3+6x^2-9x-7 becomes
-6(-x)^3+6(-x)^2-9(-x)-7. Then you just distribute.
6x^3-6x^2+9x-7 should be your final answer.

Answer 5

oh ok thanks!