WorksheetsMath 3 Module 8 Review
Total questions: 13
Worksheet time: 1hrs 11mins
f(x)=x+5
g(x)=-3x-6
Find:
(f + g)(x)
-4x-1
-2x-1
-4x-11
-2x-11
g(x)=3x+4
h(x)=3x-1
Find (g ∘ h)(x)
Which is the same thing as g(h(x))
-9x+11
4x2+4x
9x+1
9x+11
f(x) = x2 + 4 + 2x
g(x) = -3x + 2
Find (f + g)(-3) =
Hint: Add both functions together first, then plug -3 in.
0
7
11
18
f(x) = 3x + 10
g(x) = x - 2
Find f(g(5))
Hint: Solve g(5) first, then take that answer and plug it into f(x).
19
23
-10
None of these.
f(x) = 3x + 10
g(x) = x - 2
Find g(f(x))
3x + 8
3x - 2
3x + 4
None of these.
Given
f(x) = 3x2 + 7x and g(x) = 2x2 - x - 1,
find (f + g)(x).
11x2 - 1
5x4 + 6x2 - 1
5x2 + 6x - 1
5x2 + 8x - 1
Given f(x)=√x and g(x)=x-5, find the domain of (f/g)(x).
[0, 5)υ(5, ∞)
[0,∞)
(- ∞, 5)υ(5,∞)
(- ∞, ∞)
What effect does adding the function y=2x and y=sin(x) have as in f(x)=2x+sin(x)?
The period of the sine function graph increases as x increases
The amplitude of the sine function increases as x increases
The mid-line of the sine function is the line y=2x to have a climbing sine wave
The amplitude of the sine function is decreasing as x increases
What effect does multiplying the function y=3x and y=sin(x) have as in f(x)=3xsin(x)?
The period of the sine function decreases as x increases
The amplitude of the sine function increases as x increases
The graph looks like the normal sine function but the negatives deleted
The graph looks like a climbing sine function
What effect does composing the function y=x2 with the function y=sin(x) as in f(x)=sin(x2)?
The period of the sine function graph decreases as x increases
The amplitude of the sine function graph decreases as x increases
The graph looks like a climbing sine function around the parabola x2
The amplitude of the sine function graph increases as x increases
If f(x) = 3x-1 and g(x) = x2+2,
what is (f ° g)(x) ?
3x2 +5
x2 +1
3x2 +1
3x2 +6
