Finite Mathematics question 11

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Find an equation of the line that passes through the points. (-1, -2) and (4, - 5)

Oct 12th, 2015

Hello, continuing

now we must calculate the slope m first before getting an equation for the line

y= mx+b

       -2  -5    -1  -4      

m= (y1-y2)/(x1-x2)

substituting these values


          (-2+5)/ (-1-4)


m= -3/5

now to find the slope intercept





now simplify the fraction -3/5 by multiplying the numerator and the denominator by 2

also remember 2= 20/10





substituting final values into y=mx+b gives:

Answer: y=(-3/5)x-(13/5)

Oct 12th, 2015

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