Show that the point (1 2) (2 0) and (3 -2) are collinear????????
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0
Step-by-step explanation:
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-2 -1 0 1 2 3
Answered by
1
Answer:
Use area of triangle formula to prove area is 0
A = (1/2) [x1 (y2- y3 ) + x2 (y3-y1 ) + x3(y1-y2)]
= 1/2 [1 (0- -2) + 2 (-2-2) + 3 (2-0)]
= 1/2 [1 (2) + 2 (-4) + 3 (2)]
= 1/2 [2 + -8 + 6]
= 1/2 [0]
= 0
Since area of triangle is zero, the points are co-linear
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