Standard Algebra 2 Final Exam Day 3

What is the first step in finding the equation of the inverse of a function?

• get x by itself
• switch x and y
• solve for y
• write the function in inverse function notation

Tags

CCSS.HSF-BF.B.4A

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

• f^-1(x) = 4(x -2)
• f^-1(x) = (x-4)/2
• f^-1(x) = x/2 - 4
• f^-1(x) = x/4 + 2

Tags

CCSS.HSF-BF.B.4A

are these inverse functions?

• no
• yes
• no way to tell

Tags

CCSS.HSF-BF.B.4B

Rewrite in exponential form: 
2=log₉x

• 9^x=2
• 2^x=9
• 2⁹=x
• 9²=x

Tags

CCSS.HSF.BF.B.5

Expand the following logarithm: 
log₂ 6/y 

• log₂ 6 - log₂ y 
• log₂ y - log₂ 6 
• 2log 6 + 2log y
• log₂ 6 - y

log(xy²)

• logx+2logy

• logx+logy²

• logx-2logy

• logx+logy+log2

Solve the log by using change of base )

log₄32

• 8

• 5/2

• 2/5

• 3/2

What is the base of log₃(x) = 9?

• x
• 3
• 9
• 3^x

Tags

CCSS.HSF.BF.B.5

Convert 2^x+6=10 to logarithmic form

• log₄(x)=2
• log₂(4)=x
• log₂(10)=6
• log₂(x)=4

Tags

CCSS.HSF.BF.B.5

Convert 150⁰ to radians

• 5π/6
• 3π/4
• 7π/6
• 2π/3

Tags

CCSS.HSF.TF.A.1