Question

y + 3 = 0 Examine whether the expression is linear equations in two variables or not.

Answer 1

This is not linear equations in two variables because,
$y = - 3$

Answer 2

Variable are the values which are unknown to us. In short, variables are the unknown numbers such as alphabets. Only the terms which are unknown, will be counted in variables and numeric values cannot be included in variable as number are not unknown terms.


Given equation : y + 3 = 0


In the given equation,

Terms used ; y , 3 and 0


3 and 0 are numeric terms so they can't be counted in variable. Value of the used term y is not defined ( unknown to us ) and there is no other terms like y. Therefore y is the only variable in the given equation.


Hence,

Given equation is not in two variables.

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