Variables in algebraVariables in algebra are letters such as x, y, v, g, or call it any letter you want that can be used to represent unknown numbers. If the value of the variable is known, you can replace the letter with the known value. All numbers can be graphed on a number line. Just locate the value on the number line and put a dot. For example, graphing x = 4 gives the following graph: Other examples: Graph x = 6 on the number line Just locate 6 on the number line and make a draw a circle at 6 Graph x = 0 Just locate 0 on the number line and draw a circle Now, write a statement of equality for each of the following graphs. Use x as the variable. Graph #1: Answer: x = 2 Graph # 2: Answer: x = 8 




 Homepage  Integers
Comparing integers
 Adding integers
 Subtracting integers
 Multiplying integers
Division of integers
 Variables in algebra
 Linear equations
 Solving equations using addition
 Solving equations using subtraction
 Solving multiplication equations
 Solving twostep equations


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