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  • 04-05-2017
  • Mathematics
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irspow
irspow irspow
  • 04-05-2017
Pick any two points to find the slope.  Slope=(y2-y1)/(x2-x1).  I'll use (0,4) and (-1,0) to find the slope of y=mx+b...

m=(0-4)/(-1-0)=-4/-1=4 so

y=4x+b, now I'll use (-1,0) to solve for b...

0=4(-1)+b

0=-4+b

b=4 so the line is:

f(x)=4x+4
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