
Combining Functions Review Quiz
Authored by Julie Esquibel
Computers, Mathematics
9th Grade

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the composition of the functions f(x) = 2x + 3 and g(x) = x^2 - 1?
f(g(x)) = 2x^2 - 2 + 3 = 2x^2 + 1
f(g(x)) = 4x^2 + 2
f(g(x)) = 2x^2 - 2
f(g(x)) = 3x^2 + 1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Find the domain and range of the function h(x) = 3x - 2.
Domain: All even numbers, Range: All even numbers
Domain: All real numbers, Range: All real numbers
Domain: Integers, Range: Integers
Domain: Only positive numbers, Range: Only positive numbers
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Simplify the expression (f + g)(x) where f(x) = 2x - 1 and g(x) = x^2 + 3x.
4x^2 + 2x - 1
3x^2 + 5x - 1
2x^2 - 3x - 1
2x^2 + 5x - 1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If f(x) = 4x - 1 and g(x) = x^2 + 2x, find (f - g)(x).
4x - 1 / (x^2 + 2x)
4x - 1 + (x^2 + 2x)
4x - 1 - (x^2 + 2x)
4x - 1 * (x^2 + 2x)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Determine the domain of the function k(x) = √(4x - 1).
x ≥ 1/4
x > 4
x = 1/4
x ≤ 1/4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the range of the function p(x) = x^2 + 5x - 6?
The range of the function p(x) = x^2 + 5x - 6 is only positive numbers.
The range of the function p(x) = x^2 + 5x - 6 is all real numbers greater than or equal to 0.
The range of the function p(x) = x^2 + 5x - 6 is all real numbers less than or equal to the maximum value of the function.
The range of the function p(x) = x^2 + 5x - 6 is all real numbers greater than or equal to the minimum value of the function.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If f(x) = 3x + 2 and g(x) = 2x - 1, find (f * g)(x).
4x - 2
6x + 1
x^2 + 5
5x + 3
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