fuzion30 fuzion30
  • 25-06-2018
  • Mathematics
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if (-8,22) and (3,0) are two anchor points on the trend line, then find the equation of the line

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wolf1728
wolf1728 wolf1728
  • 25-06-2018
Points (-8,22) and (3,0)
We start with this equation:
y = mx + b
where m = slope


Y2 = 0 
Y1=22

X2 = 3
X1 = -8

Slope = (Y2 -Y1) ÷ (X2 -X1)
Slope = (0 -22) ÷ (3 - -8)
Slope = -22 / 11
Slope = -2
We input the slope into
y = mx + band we gety = -2x +b
Inputting one of the points (-8, 22) into the equation:
22 = -2*-8 +bb= 6
y = -2x +6


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