Question

Help?????!!

Given the function f(x) = x 2 - 2x, find f(-1) and f(1).
Based on your answers, determine if the function is even. Explain your reasoning.

Answer 1

y = x^2 - 2x
solve for x and switch the variable y and x

Answer 2

f(x) is even if f(x)=f(-x)

Answer 3

So find f(1)
Find f(-1)
If the answers are the same, then the function is even.

Answer 4

I dont know how to find them though..

Answer 5

Replace x with 1. What do you get?

Answer 6

f(x) and f(-x) ?

Answer 7

y=2x. Find y if x = 1

Answer 8

y=2

Answer 9

y=x^2-2x
Find y if x = 1

Answer 10

y=-3 ?

Answer 11

\[y=(1)^2-2(1)\]

Answer 12

What is 1^2 ?

Answer 13

1

Answer 14

What is -2(1) ?

Answer 15

So y =-1

Answer 16

yes.
f(x)=x^2-2x
Find f(1)
In other words...replace x with 1

Answer 17

Oh okay I think I get it thank you!

Answer 18

yw