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Calculating linear equations from planes

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The points on a plane: A(-3;2) and B(1.5;-3) are included in a parallel right to another one which crosses point at P(-2;-4)
a) The equation of this last right
b) The equation of the right which passes through the origin and is perpendicular to both of them

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Solution Summary

The equation of a line from planes is calculated. The points on a plane are given.

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a) Given to points A(-3,2) and B(1.5,-3) we can find the slope
of the line (right) passing through them.
The slope is m = (-3-2)/(1.5-(-3)) = ...

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