Functions: The Basics, Composites, and Inverse Functions

Interactive Video
•
Mathematics, Information Technology (IT), Architecture
•
10th - 12th Grade
•
Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of substituting -7 into the function F(x) = (3x - 5) / 4?
-21/4
-26/4
-13/2
-6.5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you express the inverse of the function F(x) = (3x - 5) / 4?
F^-1(x) = (3x - 5) / 4
F^-1(x) = (3x + 5) / 4
F^-1(x) = (4x - 5) / 3
F^-1(x) = (4x + 5) / 3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in finding FG(3) when G(x) = √(19 - x)?
Multiply F and G
Find the inverse of G
Substitute 3 into the G function
Substitute 3 into the F function
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the value of G(3) when G(x) = √(19 - x)?
4
16
3
19
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final result of FG(3) when F(x) = (3x - 5) / 4 and G(x) = √(19 - x)?
7/4
5/4
4
3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which values of X cannot be included in the domain of G(x) = √(19 - x)?
X ≤ 19
X = 19
X < 19
X > 19
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why can't values greater than 19 be included in the domain of G(x) = √(19 - x)?
They result in a negative under the square root
They make the function undefined
They make the function linear
They result in a zero under the square root
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