Name: ___________________

Date:___________________

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Grade 5 - Mathematics
13.3 Functions and Equations

  1. A function is a relation.
  2. It relates each of its inputs to exactly one output.
  3. f(x) = (2*x - 2) is an example for a function.
Example: f(x) = x + 2 is a function. What is the value of the function for x = 7
Substitute 7 for x
f(5) = 7 + 2 = 9
Answer: 9

Example: f(x) = (5*x +2) is a function. What is the value of the function for x = 5
Substitute 5 for x
f(5) = (5 * 5 + 2)
Answer: 27


Directions: Answer the following questions. Also write at least 5 examples of your own.

Name: ___________________

Date:___________________

Grade 5 - Mathematics
13.3 Functions and Equations

Q 1: Which of the following are NOT inverse operations?
Multiplication and Addition
Addition and Subtraction
Squares and Square Roots
Multiplication and Division

Q 2: Opposite operations are also called inverse operations.
True
False

Q 3: A function does the same thing to each number you plug into it.
False
True

Q 4: f(x) = (3*x - 2) is a function. What is the value of the function for x=2
2
4
6
3

Q 5: f(x) = x/3 is a function. What is the value of the function for x=12
12
3
4
36

Q 6: y = (2*x + 1) is an equation. What is the value of y for x=1?
1
2
Unknown
3

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Question 8: This question is available to subscribers only!


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