Linear FunctionsPrerequisites The Times TablesDivisionElementary AlgebraFractions and the Number LineQuadratic FunctionsPrerequisitesQuadratic EquationsWhat Are Functions?Linear FunctionsProportional FunctionsPrerequisites The Times TablesDivisionFractionsLinear FunctionsElementary AlgebraPowers in AlgebraParentheses Exponential FunctionsPrerequisitesGrowth FactorsWhat Are Functions?