What is a Function?
Learning Objective
I can look at descriptions and graphs to understand how two things are related as a function, and name the independent and dependent variables.
Practice Questions
This lesson includes 7 practice questions to reinforce learning.
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1. If a function machine multiplies every input by 7, what is the output when the input is 3?
2. Explain in your own words why a function can only have one output for each input. Give an example of a relationship that is NOT a function.
3. A table shows the following relationship between x and y: x | y ------- 1 | 5 2 | 10 3 | 15 4 | 20 What is the rule for this function? Write an algebraic expression to represent this function.
...and 4 more questions
Educational Video
Grade 8 Math #6.1a, Functions - Understanding Types of Function relationships
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