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Plot the following and check weather they are collinear or not - (1,2),(2,-1) (-1,4) |
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Answer» Answer: Step-by-step EXPLANATION: Let A(1,2), B(2,-1) C(-1,4) suppose Slope = m when the points are said to be collinear their slopes are equal slope m = (y2-y1)/(x2-x1) mAB = (-1-2)/(2-1) => -3/1 => -3 mBC = (4-(-1))/(-1-2) => (4+1) /(-3) => -5/3 mAC = (4-1)/(-1-1) => 3/-2 => -3/2 the slopes are not equal therefore they are not collinear |
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