Question

If The Points(p,q) (M,n) and (p–M,q–n)are collinear,show that pn=qM.
(class 10 CBSE SAMPLE PAPER 2017-18 MATHS)

Answer 1

Collinearity of three points:


Three points are said to be collinear if area of the triangle formed by these three points is zero.


Let A(x1,y1), B (x2,y2), & C(x3,y3) be three points. Then A, B & C will be collinear if


Area of ∆ABC=0

Or


x1(y2-y3)+x2(y3-y1)+x3(y1-y2)=0


SOLUTION IS IN THE ATTACHMENT]


Hope this will help you...

Answer 2

collinear is the answer