y is the variable
It is a linear equation in the variable a.
It is an equation in the single variable, s.
A linear equation in three variable.
It is a quadratic equation in the variable x.
y is the variable
It is an equation in one variable.
It is an equation in one variable.
It is a linear equation in the variable a.
It is a linear equation in the variable z.
It is an equation in the single variable, s.
A linear equation in three variable.
It is a quadratic equation in the variable x.
It is either a linear equation in a variable ww or a quadratic equation in a variable w, (with ww denoting w2).
It is, in fact, an identity - which is an equation which is true for all values of the variable.
It is a linear equation with a single variable, y.
It represents an algebraic equation in the variable, k.