Question

find the value of x if (0,0),(1,2)and (x,y) are collinear ​

Answer 1

Step-by-step explanation:

A(0,0) = x1,y1

B(1,2)=x2,y2

C(x,y)=x3,y3

if the points are collinear then their area will be zero

1/2|x1(y2-y3)+x2(y3-y1)+x3(y1-y2)|=0

|0(2-y)+1(y-0)+x(0-2)|=0

|0+y-2x|=0

-2x=y

x=-y/2

hope this helps you if yes the mark as brainlist