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Show that the points x(2, -2) y (-2, 1) ...

Show that the points `x(2, -2) y (-2, 1)` and `z(5, 2)` are the vertices of a right angled triangle XYZ and also calculate its area.
OR
Find the values of k for which the points `A(k+1, 2k) B(3k, 2k+3)` and `C(5k-1, 5k)` are collinear.

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Verified by Experts

The correct Answer is:
`12.5 cm `
OR
`k=2`, or `k=1/2`
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