Question

for what value of p points ( 2 , 1 ) ,(p,minus 1) and ( 1 , 3 ) are collonear

Answer 1

Answer:

Step-by-step explanation:

let us assume that these three points form a triangle.

since these three points are collinear , the area (of the triangle)must be equal to 0.[because a line does not have any breadth or length and ]

now, you can find the answer by :-

area of triangle(use the formula in the coordinate geometry) = 0