Find the relation between \'x\' and\'y\' . If the points (x,y) (1,2) and (7,0) are collinear

Find the relation between \'x\' and\'y\' . If the points (x,y) (1,2) a

1.	Find the relation between \'x\' and\'y\' . If the points (x,y) (1,2) and (7,0) are collinear
Answer» y=3x-21 is desired relation b/w x and y