Unit One, Test Review

The things that I have learned in this unit are:

* 1. Systems of Linear Equations

* 2. Substitution Solving
-Step 1: Choose a variable in either equation to be “solved for”.
-Step 2: Solve for x.
-Step 3: Substitute so that you create a single equation in on one variable.
-Step 4: Solve for that variable.
-Step 5: Use that known value to solve for the unknown value by substituting into either original equation

* 3. Algebraic Solving Method (Elimination Method)
-Step 1: Line up variables and coefficients.
-Step 2: Pick a variable.
-Step 3: Use algebra to multiply or divide an entire equation by a value to create same or opposite coefficents in either variable.
-Step 4: Add or subtract depending on whether you've created "sames" or "opposites".
-Step 5: Slove for the remaining variable.
-Step 6: Use substitution to find the first variable.

* 4. Types of Solutions to Linear Systems.
-Ordered Pairs Solution
-No Solution
-Infinitely Many Ordered Pair Solutions

* 5. Word Problems
-The two rules to solving problems are:
a. Name and define two variables
b. Create
-Then solve as desired:
a. Elimination Method
b. Substitution Method
c. Technology such as graghmatica, graghing calculator, or excel.
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The things that I do not have the stronges skills in this unit that I need to improve are:-Understanding how to set up my equations in word problem solving.

The things that I have a strong ability to do is the substitution method and elimination method