Question

prove that (1,4),(-1,2) and (-5,-2) points are collinear ​

Answer 1

Step-by-step explanation:

By area formula, 1/2 { x1.(y2-y3)+ x2.(y3-y1)+ x3.(y1-y2)}

1/2 { 1.(2+2) + (-1)(-2-4)+ (-5)(4-2) }

= 1/2. { 1(4) + (-1)(-6) + (-5)(2) }

= 1/2. { 4 + 6 - 10}

= 1/2. { 10-10}

= 0

Hence, it is collinear.

Answer 2

Answer:

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