Variables in algebra

Variables 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    

Algebra lessons

Integers                  

Variables in algebra


Recent Articles

  1. Bessy and Bob algebra word problem

    Jul 28, 17 02:38 PM

    Bessy has 6 times as much money as Bob, but when each earn $6. Bessy will have 3 times as much money as Bob. How much does each have before and after

    Read More

New math lessons

Your email is safe with us. We will only use it to inform you about new math lessons.

            Follow me on Pinterest


Page copy protected against web site content infringement by Copyscape