Question

If f(x) = x + 4, find the value of x if f(x) = 6.

A. 6
B. 4
C. 2
D. 10

Answer 1

Set x + 4 equal to six and solve for x.

Answer 2

Is it 10?

Answer 3

No. x + 4 = 6. to get x by itself on the left, you must subtract 4 from each side.

Answer 4

So, is it 6?

Answer 5

What's six minus four?

Answer 6

f(6) = x + 4 = 6
x + 4 -4 = 6 - 4
x + 0 = 2
x = 2

Answer 7

Yeah, I got it like five minutes ago. But I didn't say anything 'cause you weren't here at the time... Thanks.