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Math 1314 Sec 1.2 Formulas
Here is some practice for formulas.
3 cards·by ACCTutor
Distance formula
d = sqrt((x2-x1)^2+(y2-y1)^2)
Midpoint Formula
M = ((x1+x2)/2,(y1+y2)/2)
Standard Equation of a Circle
(x-h)^2+(y-k)^2=r^2