SAT Math - Question of the day - 9th Nov 2016

SAT Math - Question of the day - 9th Nov 2016

If f ( x ) = 4 - 2x, what is f ( x - 4 )?

Option:

a. -2x

b. -2x - 4

c. -2x + 8

d. -2x + 12

Solutions:

f ( x ) = 4 - 2x

f ( x - 4 ) =   4 - 2 ( x - 4 )

f ( x - 4 )  =  4 - 2x + 8

f ( x - 4 )  =  -2x + 12

Hence, option D is correct.

Try to solve this question on your own! Do post your comments and solutions in the comment section below.

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