Vocabulary
A letter that represents a number in an Algebraic Expression or Equation.
E.g., a in 2a, x in 3x, and xy in 4xy
Variable
8a + 15a + a + 9 + 9
24a + 18
21b - 6b - 14
15b - 14
-7w - 5 + 17w + 15
10w + 10
7x + 7
Not Like
ln algebra, these contain a mix of numbers and letters that are separated by math operators like + or -.
E.g., 2x + 5zy - 7
Hint: The word starts with an E.
Expression
5x + 35 + 4x + 7
9x + 42
12c - 6c - 30 - 6c2 - 30
6c2 + 6c - 60
19a - 6b - 17a - 3b + 9b - 2a
0
3x - 4x + x
Like
A number by itself in an Algebraic Expression or Equation.
E.g., the 2 in 3x + 4y - 2.
Constant
-2t2 + 32 + 12t + 16t + 4t2 + 8
2t2 + 28t + 40
5z - 5z2 - 55 - 26 - z
-5z2 + 4z - 81
-2f - f + f2 + 6 + 5f - 4f2
-3f2 + 2f + 6
4x + 7xy + x2
Not Like
A number in front of a letter.
E.g. 2 in 2a, 5 in 5bc or 1 in wz
Coefficient
75f + 1 + f + 11 + f + f2
f2 + 77f + 12
8d - 40 - 7d2 -7d - 4
7d2 + d - 44
5r + 3q - 8q + r - 3r2 - 4r
-3r2 + 2r - 5q
5x2 + 2x
Not Like
The number of parts in an expression or equation (separated by + or -).
E.g., 3x + 4w - 2 has 3 _________.
Term
m2 + 10 + 9m2 + m + 10m
10m2 + 11m + 10
-17h2 -15j - 18k - 4h2 - 20j - 18k
-21h2 - 35j - 36k
53t + 20r + 17 - 10t - 17r2
-17r2 + 20r + 43t + 17
10xy2 - 5xy2 + xy2
Like