Question

Find the relation the between x and y if the points A(2,1,) B(x,y) and C(7,5) are collinear.

Answer 1

given,
y-1/x-2=5-y/7-x
y-1(7-x)=5-y(x-2)
7y-xy-7-x=5x-10-xy+2y
7y-2y-7+10=5x+x
5y+3=6x
x=5y+3/6

MAYBE IT IS CORRECT