JEE Advance - Mathematics (1979 - No. 19)
The points $$\left( { - a,\, - b} \right),\,\left( {0,\,0} \right),\,\left( {a,\,b} \right)$$ and $$\left( {{a^2},\,ab} \right)$$ are :
Collinear
Vertices of a parallelogram
Vertices of a rectangle
None of these