Question

Which of the following is a linear equation in two variables
(i) x 2 +1=0 (ii) x-y-2 (iii) x=y (iv) x 2 +y2 =0​

Answer 1

Answer:

(i) x 2 +1=0

Because linear means power 1 and it should contain only one variable so option 1 is the right

Answer 2

Answer:

A linear equation in two variables are (ii) x-y-2 and (iii) x=y.

Because this equations have two variable x and y.

also the degree of the variables is one.