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Mathematics 8 Online
Charley:

Ellen makes and sells bookmarks. She graphs the number of bookmarks sold compared to the total money earned. What is the rate of change for the function graphed to the left?

Vocaloid:

|dw:1582204256298:dw| since the graph is linear you can pick any two points out of the three that are labelled, and apply the slope formula |dw:1582204333000:dw|

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