Math Grade 8 Quiz Understanding Functions – 8.F.A.1
In mathematics, a function is a relationship that matches each element from one set (the domain or input) with exactly one element from another set (the range or output). Simply put, for every input, there’s only one output. The graph of a function displays these relationships as a collection of ordered pairs (input, output). This understanding is crucial for higherlevel math where functions play a central role. This quiz will evaluate your grasp of the basic concept of functions.
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Question 1 of 10
1. Question
If f(x)=2x+3, what is f(2)?
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Question 2 of 10
2. Question
Which of the following represents a function?
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Question 3 of 10
3. Question
What is the output for the input 4 if the function is given by f(x)=x 2?
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Question 4 of 10
4. Question
The set {(2,4), (3,6), (4,8)} can be represented by which function?
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Question 5 of 10
5. Question
If the graph of a function contains the point (5,10), what can be inferred?
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Question 6 of 10
6. Question
A function that assigns each student in a class to their height in centimeters is:
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Question 7 of 10
7. Question
In the function f(x)=3x−4, if f(a)=11, what is a?
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Question 8 of 10
8. Question
If a graph passes the vertical line test, it:
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Question 9 of 10
9. Question
The graph of which function will be a straight line?
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Question 10 of 10
10. Question
What ensures that a relation is a function?
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