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Mathematics 14 Online
OpenStudy (anonymous):

How are slopes of parallel and perpendicular lines determined and how are they related?

OpenStudy (anonymous):

Straight Line Equation: y=mx+c where m is the gradient The gradient of two parallel lines are equal. m1=m2 The gradient of perpendicular lines multiply to give -1. m1*m2=-1

OpenStudy (anonymous):

\[m=\frac{y_2-y_1}{x_2-x_1}\] Use this to find the gradient if the equation is unknown :)

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