Hello, marlene!

What are we given?

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- December 18th 2012, 10:34 PM #1

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- December 18th 2012, 10:47 PM #2

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- December 19th 2012, 03:12 PM #3

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## Re: tan ?

If you are given two points and , then the slope of the line through those two points is given by . If you are given an equation, say Ax+ By= C, you can solve for y, getting and the slope is .

Those formulas are given in any Calculus text aren't they?