Which of this represent parallel lines

1)y-4x-4

2)y+Ax-4

3)y-4x-1

And Also Tell Procedure to solve this type of problem?

dear vikrant ,

 line 1 & 3 are parallel lines ...

y - 4x - 4 = 0                    L₁

y -4x -1 = 0                       L₂

comparing both of these eq by y-mx+c = 0 ...

m = slope = 4 for both these lines  so

if slopes are same then line are said to be parallel...

approve if u like this ans

Dear vikrant ,

two lines a₁x + b₁y + c₁ =0 and a₂x + b₂y + c₂= 0 are said to be equal if

a₁/a₂ = b₁/b₂ ≠ c₁/c₂

where a,b,c are magnitudes (i.e numbers before x,y and c is constant)

so if we compare (1) and (3) we get it in terms of

a₁/a₂ = b₁/b₂ ≠ c₁/c₂

this is the simplest method of solving such type of problems, the long method is what Vikas Bhaiyya has done !

Please approve