Question

Show that the points (1,2) , (-1,-1) and (-3,-4) are collinear

Answer 1

keep area as zero and do the sum

Answer 2

HERE IS YOUR ANSWER

ANSWER

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Area of triangle must be 0 because collinear

Ar of triangle =1/3(x1(y2-y3)+x2(y3-y1)+x3(y1-y2)=0

=1/2(2+6+-9)=0

1/2 (8+-9)=0

-1/2÷2 not equal to zero

There for , they are not collenear

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