Definitions
A mathematical expression containing a variable and no equal sign
Algebraic Expression
Which of these numbers are divisible by 3?
561, 123, 643
123
Three more than a number
n+3
Gerald is paid $6 to supervise a group of children at a day camp. He is paid an additional $2 per child. How much many does it make when there are 25 children?
Write an algebraic expression to represent this relation.
56
A relation whose points lie on a straight line
Linear Relation
Which of these numbers is divisible by 4?
677, 890, 624
624
Seven times a number
7n
Daphne scored the same number of goals in all 3 periods this season. She also scored 4 overtime goals, for a total of 19 goals.
How many goals did she score in each period?
3n + 4 = 19
n = 5
The number by which a variable is multiplied
Numerical Coefficient
Which of these numbers is divisible by 9 and 5?
563, 785, 960
960
Eight less than a number times 5
n-8
Twice the number of dogs in the park is 14. How many dogs are in the park?
2n = 14
n = 7
The number in an expression or equation that does not change
Constant Term
Which of these numbers is divisible by 2 and 8?
168, 492, 890
492
2 less than 1 third of a number
n/3 - 2
A number is multiplied by 4, then 5 is added. The result is 21. What is the number?
4n + 5 = 21
n = 4