Question

The equation of line passing through A (2,1) and B (1,2) is ____________________

Answer 1

Answer:

the equation is, x+y-3=0

Step-by-step explanation:

given, the points are= A(2,1) and B(1,2)

now, the equation is,

y-1=2-1/1-2 {x-2}

= y-1=1/(-1) {x-2}

= y-1=-1(x-2)

= y-1=-x+2

= x+y-1-2=0

= x+y-3=0