Question

The conditions for $ax+by+c=0$ to be a linear equation in two variables $(x,y)$ are

• A. $a=0andb=0$
• B. $a\ne 0andb\ne 0$
• C. $a$ can be zero but not $b$
• D. $b$ can be 0 but not $a$

Answer 1

The correct option is B

$a\ne 0andb\ne 0$

Condition is that both a and b are not equal to 0. i.e $a\ne 0andb\ne 0$