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Two kids walking home from school
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| Hey do you know what a function is? | |
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| Ya they a re really easy. | |
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| OH! Sorry. A function is an expression that has two or more variables. Can we go home before I go home? | |
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They stop to talk some more
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| When something is a function you can tell by looking at your domain. If one domain connects to two or more ranges it isn't a function. | |
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| Wait. Can you also do something called the vertical line test to tell if you have a function on a graph? | |
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