Summary of Coordinate Geometry Formulas

If A ( x1, y1) and B( x2, y2,), then

distance d, from A to B =




midpoint, M, of AB =




slope, m, of




Following is a list of the equations of lines:

Standard form:

Ax + By = C

A, B, and C are real numbers

A and B are not both zero

Point-slope form:

yy1 = m ( xx1)

( x1, y1) is a point on the line and m is the slope of the line

Slope-intercept form:

y = mx + b

m is the slope of the line and b is the y-intercept value

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