Question

If f(x) = 9 − 4|x + 1|, find f(−5).
(Points : 1)
a. −15
b. −7
c. 7
d. 23

Answer 1

See how the only difference is

f(x) is now f(-5) ... the 'x' was replaced by -5 ...we will do that in the equation too!

Replace every 'x' you see with -5

f(-5) = 9 - 4|-5 + 1|

Deal with the absolute value first....-5+ 1 = -4 right? well the absolute value of that is 4...so

f(-5) = 9 - 4(4)

Can you take it from here?

Answer 2

whats the answer

Answer 3

What's 9 - 4(4) ?

Answer 4

-7

Answer 5

There you go!

Answer 6

thank u

Answer 7

can u help with more ?s

Answer 8

If f(x) = |x + 6|, find f(−10).
(Points : 1)
a. −16
b. 16
c. −4
d. 4