inequality

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A3 understand and use the concepts and vocabulary of expressions, equations, formulae, identities, inequalities, terms and factors

A6 know the difference between an equation and an identity; argue mathematically to show algebraic expressions are equivalent, and use algebra to support and construct arguments and proofs

A22 solve linear inequalities in one or two variable(s) and quadratic inequalities in one variable; represent the solution set on a number line using set notation and on a graph