Show that points P (3,1) ,Q(-1,9) ,and R(4,-1) are collinear.

Show that point P(-3,2) Q(1, -2) and R(9, -10) are collinear

Show that points P (-2,3) ,Q(1,2) ,R(4,1) are collinear.

Show that points P(5,6) , Q (4,5) and R = (3,4) are collinear .

show that the points (1,1),(-2,7) and (3,-3) are collinear.

Show that the points (1, 1), (2, 3) and (5, 9) are collinear.

show that the points (0,-1),(1,0) and (3,2) are collinear.

(A) Complete any one out of two activities : Complete the following activity to show the points P(3,0) Q (6,-2) and R (-3,4) are collinear . Let P( 3,0) = (x_(1) ,y_(1)) Q (6,-2)= (x_(2),y_(2)) R (-3,4) = (x_(3) , y_(3)) slope of a line PQ = (y_(2)-square)/(x_(2) -x_(1)) = (-2-0)/(6-3)= square " " ...(1) slope of line QR = (y_(3) -y_(2))/(x_(3)-x_(2))= (square -(-2))/(-3-6) = (4+2)/(-9) = 6/(-9) = square " " ... (2) :. from (1) and (2) the slopes of lines PQ and QR are square and point square is the :. points P,Q and R are collinear .

9.Show that the points (0,-3)(1,-1) and (2,1) are collinear.

Show that the points (1,-1),(5,2) and (9,5) are collinear.

If the points P(1,5) , Q(-1,1) and R(4,y) are collinear, find the value of y .