|
 An
algebraic expression
is a phrase that contains one or more variables and it does
not contain an equal sign.
x +6
is an algebraic expression
It many also contain numbers and operating symbols such
as plus and minus signs. It shows a relationship between quantities and
one or more variables.
 In
algebraic expressions, a variable is a
letter, such as x or y.
y + 7
y
is the variable
These letters are called
variables because the numbers they
represent can vary. They
can stand for any one of many possible
numerical values in the expression.
|
Algebraic expressions represent verbal expressions. |
|
Statement |
Algebraic Expression
|
|
Mary weighs 10 pounds less than Tom. |
If T= Tom's weigh, than T-10
represents Mary's weight. |
Now, let's look at another example
|
Algebraic expressions represent verbal expressions. |
|
Statement |
Algebraic Expression
|
|
Phil has d dollars in the bank. Nicole has 2 times as
much money as Phil. How much money does Nicole have? |
2d or 2 x d |
|
 |
Remember:
An algebraic expression is
only a phase, so it does not contain an equal sign. |
Now
let's
practice!
| 
