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### Grade 5 - Mathematics13.3 Functions and Equations

 A function is a relation. It relates each of its inputs to exactly one output. 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.
 Q 1: Opposite operations are also called inverse operations.FalseTrue Q 2: Which of the following are NOT inverse operations?Squares and Square RootsMultiplication and AdditionAddition and SubtractionMultiplication and Division Q 3: y = x/2 is an equation. What is the value of y for x=4?4Cannot be solved26 Q 4: f(x) = x * 2 is a function. What is the value of the function for x=3623Unknown Question 5: This question is available to subscribers only! Question 6: This question is available to subscribers only!