3 Written Questions

1. a letter or other symbol that represents a number
2. a number sentence that contains an equal sign and algebraic expressions - ex. y + 2 = 5
3. One of the two numbers in an ordered number pair

2 Multiple Choice Questions

1. a group of mathematical symbols that represents a number and does not contain a relation symbol (=, <, >) - ex. 5 * 4
   1. variable
   2. equation
   3. expression
   4. formula
2. a number sentence that contains an equal sign - ex. 2 + 5 = 7
   1. equation
   2. variable
   3. expression
   4. formula

2 True/False Question

1. algebraic expression → a number sentence that contains an equal sign and algebraic expressions - ex. y + 2 = 5
   

   True        False

2. formula → a letter or other symbol that represents a number
   

   True        False