Question

Which of the following is an even function?
f(x) = (x – 1)^2
f(x) = 8x
f(x) = x^2 – x
f(x) = 7

Answer 1

b?

Answer 2

D*

Answer 3

even function f(x) = f(-x)

odd -f(x) = f(-x)

test them

Answer 4

Rule for even function is f(-x) = f(x)
f(x) = (x – 1)^2
f(-x) = (-x-1)^2
=(x+1)^2 is not equal to f(x)
f(x) = 8x
f(-x) = -8x is not equal to f(x)
f(x) = 7
f(-x) =7 =f(x)
f(x) =7 is the even
Source: http://www.mathskey.com/question2answer/

Answer 5

Thank you!