WorksheetsCh.2B Review
Total questions: 8
Worksheet time: 13mins
Name
Class
Date
1.
Find f∘g where f(x)=x2+1 and g(x)=4x .
a)
4x+1
b)
4x2+1
c)
16x2+1
d)
4x2+1
2.
Find the domain:
a)
All real numbers
b)
All reals numbers except x=-1
c)
All reals numbers except x=-1 and x=2
d)
All reals numbers except x=0
3.
Which is NOT a way to verify 2 functions are inverses?
a)
Swap x and y and solve for y in one of the equations.
b)
Use the Inverse Function Property f(g(x))=x AND g(f(x))=x
c)
See if y=x is a line of symmetry.
d)
See if the functions are one-to-one.
4.
Find the inverse of f(x)=x+5 .
a)
f−1(x)=(x−5)2
b)
f−1(x)=x2+25
c)
f−1(x)=(x−5)2 if x≥5
d)
f−1(x)=x2−5
5.
An absolute value function is one-to-one.
a)
True
b)
False
6.
Factor 16x²-81
a)
(4x-9)²
b)
(4x+9)²
c)
(4x-9)(4x+9)
d)
It isn't factorable.
7.
Factor x³-64
a)
(x-8)³
b)
(x-4)(x²+4x+16)
c)
(x+4)(x²-4x+16)
d)
It isn't factorable
8.
Factor 4x3-12x2+x-3 completely
a)
(x2-3)(4x-1)
b)
(4x2)(x-3)
c)
(4x2+1)(x-3)2
d)
(4x2+1)(x-3)
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