Vocabulary
A letter used to represented a number (x, y, z...)
Variable
12x - 8x
4x
-3(x + 4)
-3x - 12
If x = -2 and y = 4, evaluate...
x + y
2
8 + 4y - 2 - 11y + 7x
How many terms are there?
5
What is your teachers favorite animal?
Cow
Contains numbers, variables, & one or more operations
Algebraic Expression
-17y - 8y
-25y
7(x - 10)
7x - 70
If m = 3 and n = 5, evaluate...
2m + n
8 + 4y - 2 - 11y + 7x
What are the variables?
x, y
Arkansas State University
A number in front of (multiplied by) a variable. For example, -5x, what is the -5?
Coefficient
-19p - 10 + 5
-19p - 5
5(2x - 9)
10x - 45
If c = -5 and d = 1, evaluate...
3c + 2d
-13
8 + 4y - 2 - 11y + 7x
What are the coefficients?
4, -11, 7
What school did your teacher come from?
Magnet Cove
A term without a variable
Constant
6x + 4 + 9x - 11
15x - 7
6(2x - 12)
12x - 72
If q = 5, r = -1, and s = 3, evaluate...
2q + 3r - s
4
8 + 4y - 2 - 11y + 7x
What are the consants?
8, -2
What year of teaching is this for your teacher?
7
Parts of an expression separated by a plus or minus sign
Terms
2x + 8y - 4y + 16 + 10x
11x + 4y + 16
-7(-3x + 2)
21x - 14
If g = -4, h = 9 and i = 2, evaluate...
2g - 3h + i
8 + 4y - 2 - 11y + 7x
List the terms of the expression.
8, 4y, -2, -11y, 7x
What year was your teacher born?
1996