Lines

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7 Terms

1
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Equation of a Straight Line

y = mx + c

2
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Gradient

change in y / change in x

3
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Midpoint

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4
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Length of a Line

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5
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If two lines are perpendicular

m1 * m2 = -1

6
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If two lines are parallel

they have the same gradient

7
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To find point of intersection

Solve simultaneously for x and y