Algebra Ch 5 Review Functions

Simplify completely.

• √12

• 2√2

• 8

• 2√3

Solve for x. Check for extraneous solutions.

• both are extraneous (no solution)

• x = 6 & x = -7

• x = 6

• x = -7

f(x) = 3x + 10
g(x) = x - 2
Find f(g(0))

• 16

• 4

• -4

• None of these.

What's the name of the inverse of g(x)?

• f(x)

• f^-1(x)

• y

• g^-1(x)

What is the inverse of the function
f(x) = 2x + 4   ?

If the equation of f(x) goes through (1, 4) and (4, 6), what points does f^-1(x) go through?

• (1, 4) and (4, 6)

• (-4, -1) and (-6, -4)

• (-1, -4) and (-4, -6)

• (4, 1) and (6, 4)

are these inverse functions?

• no

• yes

• no way to tell

What is the RANGE of this graph?

what is f(g(2)) ?

• 3

• 8

• 1

• 4

Is the relation shown a function?

• No, because the x-value 11 is paired with 5 and 8.

• Yes, because each x-value has only one y-value paired with it.