Question

In two linear equations if a1/a2 equal b1/b2 c1/c2 then two straight lines are​

Answer 1

Now, lest's say that we have 2 linear equations- a1x + a2y = c2 AND a2x + b2y = c2

2) As we all know if a1/a2 ≠ b1/b2 then the lines intersect each other.

If a1/a2 = b1/b2 ≠ c1/c2 then the lines are parallel

And if a1/a2 = b1/b2 = c1/c2 then the lines are coincident

Again Why? What is the proof that this is true?

Please help. Thanks for the answer