Determjne if the points (1, 5), (2, 3) and (-2, -11) are collinear.

Use distance formula
And find ab bc and ca (where a b and c are (1,5),(2,3),(-2,-11) respectively
Then if the sum of ab + bc = CA then these are colineer do this method if question come in 2 or 3 marks if in true/ false vsaq then plot these points on roughly graph and join these if it make line then these are colllinear
Hope this help you