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Find the equation of the line passing through (1,-1) and (2,-5).  Enter the answer in standard form.

 Jun 30, 2020
 #1
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I'll start with y - mx + b form      m = slope =   (y1-y2)/(x1-x2)    =  -4

y = -4x + b     sub in one of the points to calc 'b'

-5 = -4(2) + b     b = 3

y = -4x+3    now convert to standard form

y + 4x = 3

 Jun 30, 2020

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