algebra formulas

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8 Terms

1
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distance formula

square root of (x2-x1)squared + (y2-y1)squared

2
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midpoint formula

(x1+x2/2 , y1+y2/2)

3
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formula of a line

y=mx+b

4
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how to graph a line

y-y1 = m(x-x1)

5
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equation of a circle

(x-h)squared + (y-k)squared = r squared

6
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slope formula

y2-y1/x2-x1

7
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do parallel lines have same or different slopes

same

8
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do perpendicular have same or different slopes

opposite reciprocal slopes, ex. ¼ = -4