Identifying: Expressions, Identities, Formulas and Equations

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Is this an expression, equation, formula or an identity ?

2(x+3)

• expression

• identity

• equation

• formula

Is this an expression, equation, formula or an identity ?

2x+3 = 11

• expression

• identity

• equation

• formula

Is this an expression, equation, formula or an identity ?

Area = Length x Width

• expression

• identity

• equation

• formula

Is this an expression, equation, formula or an identity ?

2(x +3) ≡ 2x + 6

• expression

• identity

• equation

• formula

Is this an expression, equation, formula or an identity ?

Speed = Distance ÷ Time

• expression

• identity

• equation

• formula

Is this an expression, equation, formula or an identity ?

3a + 4b + 2a – a

• expression

• identity

• equation

• formula

Is this an expression, equation, formula or an identity ?

5a – 7 = 8

• expression

• identity

• equation

• formula

Is this an expression, equation, formula or an identity ?

3(a + 2) = 27

• expression

• identity

• equation

• formula

Is this an expression, equation, formula or an identity ?

5x + 3 = 7x - 5

• expression

• identity

• equation

• formula