Question

SAT MATH 2 QUESTION

WILL AWARD A MEDAL!

If f(x)=|5-3x| then f(2)=

A) f(-2)
B) f(-1)
C) f(1)
D) f(4/3)
E) f(7/3)

Answer 1

Subsititue the two in for x in f(x)=|3x-5|
f(2)=|3(2)-5| = ?

Answer 2

Answer is (D)... so your method is incorrect. I used your method at first and it was wrong. @vheah

Answer 3

This is SAT Math 2...

Answer 4

I don't understand how it would be 4/3 if the meaning of f(2) means what would the function equal two if x is two. Where did you get the answer from?

Answer 5

what would the function equal t if x=2 * my bad.

Answer 6

I figured out how to do it.

Step 1. Plug 2 into the equation.
You get |5-3(2)| = |-1| = 1

Step 2. This expression is now equivalent to 1.
Solve for x.
1 = 5 - 3x
-4 = -3x
4/3 = x

@vheah

Answer 7

That makes perfect sense now. Good job!