key words
What letter is used to represent an unknown value in algebra?
Variable
3x and 5x are like terms.
True
X+X
2x
Which is the odd one out: 3x, 5x, 2y, 8x
2y
What is the number multiplied by a variable called?
Coefficient
4a and 4b are like terms
False
3a+2a
5a
4a, 7a, 9, 2a
9
What do we call a number with no variable attached?
Constant
A constant has a variable
False
7x-4x
3x
2x+1, 5x−3, 7y+2, 4x+9
7y+2
What do we call terms that have the same variable and power?
Like terms
2x+3x=5x
True
2y+5+3y+1
5y+6
3a+2, 5a−1, 8a+b, 6a+9
8a+b
What is the algebraic phrase called: 3x+5?
Expression
7a+2b=9ab
False
4a+2b+3a−b+6
7a+b+6
2x+3x, 4a+a, 7y−2y, 5b+2c
5b+2c