Equations and Formulas

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Section 1.2.1 Equations and Formulas
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Definition
Point-Slope form of a linear equation
Slope
Point (x1,y1)
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Example
Find the equation of the line that passes
through the point (-1,5) and has slope .
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Example
Find the equation of the line that passes through
the points (1,2) and (5,-3). Sketch the graph.
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Midpoint Formula
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Example
Find the midpoint of the segment that has
endpoints at (1, 2) and (5, -3).
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Distance Formula
The distance between any 2 points with
coordinates given by the formula
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Example
Find the distance between B(1, 2) and C(5, -3).
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Assignment
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