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BIM ALG 1 Ch 4.1  Equations of Lines

BIM ALG 1 Ch 4.1 Equations of Lines

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Mathematics

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9th - 12th Grade

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Hard

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Steven Sypkens

Used 3+ times

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9 Slides • 0 Questions

1

BIM ALG 1 Ch 4.1 Equations of Lines

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Equation of Lines

y=mx+b


m=2

b=1

y=2x+1

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b=y intercept y values!

Where line crosses y axis.

b=4

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 m=y2−y1x2−x1m=\frac{y2-y1}{x2-x1}  
 m=0−45−0=−45m=\frac{0-4}{5-0}=\frac{-4}{5}  

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y=mx+b

 y=−45x+4y=-\frac{4}{5}x+4   

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 m=y2−y1x2−x1m=\frac{y2-y1}{x2-x1}  

Two points on a graph.

 m=2−83−7=6−4m=\frac{2-8}{3-7}=\frac{6}{-4}  
 m=−32m=-\frac{3}{2}  

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7

If I continue line down, it crosses y axis at (0, -5/2).   b=-5/2

Line is  y=−32x−52y=-\frac{3}{2}x-\frac{5}{2}   

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8

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Code on board

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9

HW:

P179 3-33 every 3rd

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pattern-tertiary

BIM ALG 1 Ch 4.1 Equations of Lines

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