Friday 14 February 2014

COORDINATE GEOMETRY C9



Find the slope of a line which passes through (3, -2) and (6, 6).

Solution

x1 = 3,  y1 =-2,  x2 = 6,  y2 = 6

m = y2 –y1
      x2 – x1

m =   -9 – 6
         6 – 3

m =   -15
           3

m =    -5
           

Hence the slope is -5


TRY THIS....................

Find the slope of a line which passes through (-9, -2) and (6, -5).


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