Question

Why it is written a and b can't be zero in linear equation in two variable

Answer 1

Answer:

General form of linear equation using two variables I always read can be written:

Ax+By+C=0

where A and B cannot both be 0.

So does it means like

1x+0y+c=0

is a linear equation of two variables i.e basically what I am asking is that both A and B cannot be zero but can either A or B be 0 like:

0x+4y−5=0or3x+0y−15=0

Answer 2

Answer:

It's rule to show a and b not zero .