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1.4 Solving Equations. Objective: I will write and evaluate one and two-step equations. Vocab 1. Inverse operations : operations that “undo” each other ex: addition and subtraction; multiplication and division 2. Literal equation : an equation that uses two letters as variables
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1.4 Solving Equations Objective: I will write and evaluate one and two-step equations
Vocab 1. Inverse operations: operations that “undo” each other ex: addition and subtraction; multiplication and division 2. Literal equation: an equation that uses two letters as variables 3. Identity: an equation that is true for every value of the variable
When solving one and two-step equations, always use inverse operations to solve for the variable! Remember AsMOD… 1. add or subtract 2. multiply or divide Remember AsMod 1. add or subtract 2. multiply or divide Remember AsMod… 1. add or subtract 2. multiply or divide
Algebra Property Card Properties of Equality Reflective: a = a 5 = 5 Symmetric: If a = b then b = a If ½ = .5 then .5 = ½ Substitution: If a = b then you can If a = b and 9 + a = 15 replace a with b and then 9 + b = 15 vice versa Transitive: If a = b and b = c then If 2.5 = 2½ and 2½ = 5/2 a = c then 2.5 = 5⁄2
Always Check Your Work!!!