Review:
- Have a good understanding of the vocabulary in this unit: term, variable term, constant term, coefficient, like terms, equation, solution and algebraic expressions.
- Recall the properties learned in unit 1 (commutative, associative and distributive).
- How to use the addition and subtraction properties of equality.
- How to use the multiplication and division property of equality.
- Solving linear equations in one variable, know the steps.
- How to apply the flow chart for problem solving to application problems (word problems).
Helpful Hints:
- Make sure you understand the difference between an algebraic expression and an equation. Combining like terms is used to simplify algebraic expressions, whereas properites of equality are used in equations.
- Remember the goal for equations is to "isolate" the variable. This means the variable will have a coefficient of one and be by itself on one side of the equation. Also, remember that x=p means the same as p=x.
- Make sure when you solve an application that the answer makes sense.
- For application problems make sure to define your unknown, write an equation, solve and answer the question. For most word problems the "answer" is only worth one point out of at least 4.