Answer: B)The variable must be raised to the second power.
Explanation:
The general form of linear equation is given by :-
, where m and c are real numbers .
It represents a line on a coordinate plane.
It can have one or two variables.
the equation has an equal sign.
It is the equation with variable of first degree.
It cannot have degrees greater than one.
Therefore, Option B is not an attribute of a linear equation.