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Why is the graph of a linear function a straight line?

Why is the graph of a linear function a straight line?

by William McCallum | Feb 6, 2018 | Grades 6–8

By William McCallum In my last post I wrote about the following standard, and mentioned that I could write a whole blog post about the first comma. 8.F.A.3. Interpret the equation $y = mx + b$ as defining a linear function, whose graph is a straight line; give...

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