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Slope = rise/run

A measure of how one quantity changes with repsect to the other

General Form

Ax+By+C=0

Slope Point Form

The equation of a line in the form y-y1=m(x-x1), where m is the slope of the line and the line passes through point P (x1,y1)

Slope Intercept Form

The equation of a line in the form y=mx+b, where m is the slope of the line, and b is its y-intercept

Positive Slope

When Rise/Run is positive

Negative Slope

When Rise/Run is negative

Zero Slope

When Rise/Run, Rise = 0

Undefined Slope

When Rise/Run, Run = 0

Parallel

When lines are always the same distance apart and will never meet. (They also have the same slope)

Perpendicular

When a line meets another line and creates a 90 degree angle.

Negative Reciprocal

The Y in X * Y = -1. For example, 4 * -1/4 = -1

Quadrilateral

A four sided shape

Parallelogram

A qudrilateral with 2 sets of parallel sides

Desmos.com

A website you can use on your phone, or your computer, that will help you graph