Function, Domain And Range, Vertical Line Test
First quiz
Questions and Answers
- 1.
Is the relationship a function?
- A.
Yes
- B.
No
Correct Answer
A. YesExplanation
The relationship is a function because for every input, there is only one corresponding output.Rate this question:
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- 2.
Which does NOT represent a function from A to B?
- A.
{(0,1),(1,-2),(2,0),(3,0)}
- B.
{(0,-1),(1,-2),(2,2),(3,0),(1,1)}
- C.
{(0,0),(1,0),(2,0),(3,0)}
Correct Answer
B. {(0,-1),(1,-2),(2,2),(3,0),(1,1)} -
- 3.
Is this a function?
- A.
Yes
- B.
No
Correct Answer
B. NoExplanation
The given question asks if something is a function. The answer provided is "No". This means that the thing in question is not a function.Rate this question:
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- 4.
Which graph represents a function?
- A.
Graph 1
- B.
Graph 2
Correct Answer
B. GrapH 2Explanation
A graph represents a function if each input value (x-coordinate) corresponds to exactly one output value (y-coordinate). In Graph 2, for every x-value, there is only one y-value associated with it, satisfying the definition of a function. However, in Graph 1, for some x-values, there are multiple y-values, which violates the definition of a function. Therefore, Graph 2 represents a function while Graph 1 does not.Rate this question:
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- 5.
F(x) = 2x+5Evaluate f(3).
- A.
10
- B.
11
- C.
12
Correct Answer
B. 11Explanation
To evaluate f(3), we substitute 3 into the equation f(x) = 2x + 5. This gives us f(3) = 2(3) + 5 = 6 + 5 = 11. Therefore, the correct answer is 11.Rate this question:
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- 6.
F(x) = 4x^2Evaluate f(5).
- A.
100
- B.
400
- C.
81
Correct Answer
A. 100Explanation
To evaluate f(5), we substitute 5 into the function f(x) = 4x^2. Therefore, f(5) = 4(5)^2 = 4(25) = 100.Rate this question:
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- 7.
F(x) = x^3-xEvaluate f(4).
- A.
48
- B.
60
- C.
40
Correct Answer
B. 60Explanation
To find the value of f(4), we substitute 4 into the function f(x) = x^3 - x. Therefore, f(4) = 4^3 - 4 = 64 - 4 = 60.Rate this question:
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- 8.
F(x) = x^2 – 5x + 4Evaluate f(8).
- A.
20
- B.
24
- C.
28
Correct Answer
C. 28Explanation
To evaluate f(8), we substitute x=8 into the given function f(x). So, f(8) = 8^2 - 5(8) + 4 = 64 - 40 + 4 = 28. Therefore, the correct answer is 28.Rate this question:
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Current Version
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Mar 22, 2023Quiz Edited by
ProProfs Editorial Team -
Jan 26, 2011Quiz Created by
TAG614
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