Question

ax +by +c=0, where a,b,c are real no is called a linear equation in two variables x and y if.

Answer 1

Answer:

a not equal to b

Answer 2

ax+by+c=0 is linear equation in two variables x and y if a is not equals to b.

1) first of all understand the meaning of the linear equation in two variable it means there must be two variable which is x and y and linear means the degree of x and y must be equals to 1.

2) In the linear equation there are the coefficient a, b and c as well so the value of the coefficient must be a real number which is mentioned in the question there is a condition that the values of the coefficient maybe equal to each other and may not be but in the options only a is not equals to b is given so the option A) is correct