math 9th grade unit 2 basic formula
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Last updated 4:35 PM on 9/5/26
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7 Terms
1
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Distance Formula
D = √((x₂ - x₁)² + (y₂ - y₁)²)
2
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Midpoint Formula
MP = ((x₁ + x₂)/2, (y₁ + y₂)/2)
3
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Slope-Intercept Form
y = mx + b
4
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Standard Form
Ax + By = C
5
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Point-Slope Form
y - y₁ = m(x - x₁)
6
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Slope Formula
m = (y₂ - y₁)/(x₂ - x₁)
7
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Equation of a circle
(x - h)² + (y - k)² = r² （h=x， k= y）