The Algebra of Straight Lines

Posted April 2, 2012

by Lensyl Urbano

A quick graphical calculator for straight lines -- based on This. It's still incomplete, but it's functional, and a useful complement to the equation of a straight line animation and the parabola graphing.

You can graph lines based on the equation of a line (in either the slope-intercept or point-slope forms), or from two points.

Straight Lines

Slope-Intercept Form Two Points Point-Slope Form
y = m x + b (x1, y1) =
( , )
y - y1 = m ( x - x1)
y = x +

(x2, y2) =
( , )
y - = ( x - )

x intercept: Slope: Equation:
y intercept: Points:
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Citing this post: Urbano, L., 2012. The Algebra of Straight Lines, Retrieved February 23rd, 2018, from Montessori Muddle: .
Attribution (Curator's Code ): Via: Montessori Muddle; Hat tip: Montessori Muddle.

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