Question

Given f(x) = l x l , what is the domain of f(x) = 1/8f(4x+9)-3 ?

Answer 1

a) D = {x E R I x > or equal to 0}
b) D = {x E R I -4 < or equal ro x < or equal to 4
c) D = {x E R }
d) D = {x E R l 0< or equal to x < or equal to 9}

Answer 2

@qpHalcy0n Last one :/

Answer 3

I know that it has to be real numbers since it's absolute value

Answer 4

\[\frac{1}{8f(4x+9) -3}\]
??

Answer 5

\[\frac{ 1 }{ 8 }f (4x+9)-3\]

Answer 6

Do I give any value for x?

Answer 7

Oh, in that case, is there any restriction? Sure there's an absolute value, but that won't have any effect on the domain.

Answer 8

It will change the RANGE.

Answer 9

Oh.

Answer 10

You're right.

Answer 11

So a) cannot be the asnwer.

Answer 12

Right, this is another linear function. The domain is all real numbers.

Answer 13

It's c?

Answer 14

Looks to be that way.