Vocabulary
A letter used to represent a number is called...
5*92
405
A number increased by 2
x + 2
Is 10 a solution of 7n=77?
NO!
x=5, y=0, z=2
(y + z)2
4
A combination of operations with variables and numbers is called...
Algebraic Expression
18 ÷ 2 + 7
16
The quotient 3 and a number
x ÷ 3
Is 175 a solution to n - 25 = 150?
YES!
x=5, y=0, z=2
x3 - 2z
121
A statement written in the form "expression = expression" is called...
An equation!
19 - 2(32 - 22)
9
10 less than a twice a number
2x - 10
Is 14 a solution to 30 = 3(n - 3)?
NO!
x=5, y=0, z=2
3x - 4y + z3
23
The number for a variable that makes an equation true is called a...
Solution
(7 - 5)3 * [92 ÷ (2 + 7)]
72
7(x - 2)
Is 20 a solution to 5(n - 7) = 65?
YES!
x=5, y=0, z=2
(x - 2)3 + z2 - 2y
31
Replacing a variable in an expression by a number, then finding the value of the expression is called...
Evaluating the expression
(6 - 3)4 * [102 ÷ (3 + 17)] + 3
408
The quotient of a number and 5 plus three times the sum of the same number and 1
x ÷ 5 + 3(x + 1)
What would a solution be to 3n - 8 = 28?
n is 12!
x=5, y=0, z=2
2 * 5z2 - 3(z - y + x)
19