Question

Write down the equation of the line parallel to x-2y+8=0 passing through the point (1,2).

Answer 1

let equation of line parallel to x-2y+8 = 0 is x-2y+c = 0
since the line passes through (1,2) hence it satisfy the equation 
1-4+c = 0
c = 3
hence the equation of line parallel to x-2y+8 = 0 is x-2y+3 = 0