Which label describes the following?
7x² – 3 = 0
Expression
No, it's not an expression. Expressions have no equal sign.
Linear equation
No, it's an equation because it has an equal sign, but it is not
a linear equation because a linear equation has only the
FIRST power of x, not any higher powers. This one has a
term in x², which is not allowed in a linear equation.
Equation which is not linear
Yes, this is the right choice. It is a quadratic equation, not
a linear equation.
Edwin
