Question

Could anyone explain how to do this?
What is the value of h(–7)?

h(x) = 3|x| – 1

h(–7) = ________?

Answer 1

hint, |-7|=7

Answer 2

Wait, so do I take the 7 and put it in place of x?

Answer 3

e_e Guess so?...

Answer 4

close. h(-7) is short-hand for
find the "definition of h(x)"
and everywhere you see "x", replace x with -7

Answer 5

name = formula or definition
h(x) = 3|x| – 1

h(-7) = 3 |-7| -1

now you need to know what the | | things mean: absolute value. they make whatever is inside positive. so | 7| = 7 (no change) but |-7| becomes 7 (-7 became +7)

Answer 6

refresh your browser if that does not display

Answer 7

Thanks, Phi.

Answer 8

what did you get for an answer?