8. Find a relation between x and y if the points (x, y), (1.2) and (7,0) are collinear
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Since these points are collinear
Therefore area of triangle is 0 unit.
0=|1/2 [x (2-0)+1 (0-y)+7 (2-y)]
0=[2x-y+14-7y]
2x-8y+14=0
x-4y+7=0
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