Level 2
Level 1

Chapter 1


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Distance formula
d(p1, p2) = [(x2 - x1)^2 + (y2 - y1)^2)]1/2
Midpoint formula
M = (x, y) = [ (x1 + x2)/2], [ (y1 + y2)/2 ]
Slope
m = (y2 - y1)/(x2 - x1), x1 =/= x2
Point Slope Form
y - y1 = m(x - x1)
Slope intercept form
y = mx + b
General form
Ax + By = C
Unit circle
x^2 + y^2 = 1
General form of the equation circle
x^2 + y^2 + ax + by + c = 0