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Geometry Course/Line/Straight Line
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Straight Line
Straight Line is a line that can be drawn from any two points.
Straight Line Equations
Straight Line through two points
If there are 2 points (x1, y1) and (x, y) a line can be drawn these two points with a slope
slope
The equation of the line can be
point-slope
Straight Line through point
From above if x1 and y1 equal zero then
original
Equation of a straight line through point (0, 0) that has a slope equal 1.
diagonal