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m=change in y/change in x

slope formula

y-y₁=m(x-x₁)

point slope form

y=mx+b

slope intercept form

hyp²=leg²+leg²

Pythagorean Theorem

d=√(x-x)²+(y-y)²

distance formula

(x+x) / 2 , (y+y) / 2

midpoint formula