Functions Review

What is the range?

• (-∞, ∞)

• (-2, ∞)

• [-2, ∞)

• (-∞, 0) U (0, ∞)

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

If f(x) = 3x-1 and g(x) = x²+2,

what is (f ° g)(x) ?

• 3x² +5

• x² +1

• 3x² +1

• 3x² +6

Tags

CCSS.HSF-BF.A.1C

Find the inverse of f(x) = -3x²+5

• 
• 
• 
• 

Tags

CCSS.HSF-BF.B.4D

What is the domain?

• (4, ∞)

• (-4, ∞)

• [-3, 3)

• (-3, 3]

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

What is the domain?

• (-infinity, -5) U (-5, 5) U (5, infinity)

• (-infinity, -5) U (-5, 4) U (4, infinity)

• (-infinity, -4) U (-4, 5) U (5, infinity)

• (-infinity, -5) U (-5, -4) U (-4, infinity)

What is/are the increasing interval(s) for the function shown?

• $\left[4,\ 8\right]$

• $\left[-3,\ 1\right]$

• $\left(-\infty,1\right]\ and\ \left[-3,\ 1\right]$

• $\left(-\infty,\ 1\right]\ and\ \left[4,\ 8\right]$

What is/are the decreasing interval(s) for the function shown?

•  $\left[2,\ 4\right]\ and\ \left[8,\ \infty\right)$ 

•  $\left(-\infty,\ 1\right]\ and\ \left[8,\ \infty\right)$ 

•  $\left(-\infty,1\right]\ U\ \left[-3,\ 1\right]\ U\ \left[8,\ \infty\right)$ 

•  $\left(-\infty,\ 1\right]\ U\ \left[2,\ 4\right]\ U\ \left[8,\ \infty\right)$ 

What is the decreasing interval(s) on the function shown?

• $\left(-7,\ -6\right]\ and\ \left[-2,\ 4\right]$

• $\left(-7,\ 0\right]\ and\ \left[-2,\ 4\right]$

• $\left(-7,\ -6\right]\ and\ \left[-2,\ 0\right]$

• $\left(-7,\ 0\right]\ and\ \left[4,\ 5\right]$

What is the inverse of the points

(1,3), (2,4), (6,8)

• (3,1), (4,2), (8,6)

• (-3,-1), (-4,-2), (-8,-6)

• (1,3), (2,4), (6,8)

• (-1,-3), (-2,-4), (-6,-8)

Are these inverse functions?

• no
• yes
• no way to tell

Tags

CCSS.HSF-BF.B.4B