Unit 4 Vocabulary
Variable
Coefficient
Example
Variable
Example
Definition
Coefficient
2x + 4y*6
A letter used to represent an unknown value.
2x + 4y*6
The number that is placed before the variable and is multiplied by the variable.
Variable
Definition
Coefficient
Expression
Reciprocal
Definition
Example
Constant
Properties
An expression is a mathematical phrase without an equal sign.
2x + 4y*6
Example
Definition
You get a reciprocal of a number by dividing it by one.
Zero Property
Inverse Property
Associative Property
Commutative Property
It says if you add zero to any number you get itself. It is also called the Identity property.
It says if you combine a number with its inverse you will get its identity.
It says you can switch numbers and you will still get the same answer.
It says even though you change the order of the numbers the answer doesn't change.
2x + 4y*6
A number that doesn't change in an operation
5+4=4+5
2*(3*4)=3*(2*4)
5*1/5=0
-1+1= 0
4+0=4
8*1=8
Constant
Distributive Property
Equation
It says that the product of a number and a sum is equal to the sum of the individual products of the added to the number.
4(2+3)=(4*2)+(4*3)
An equation is a mathematical phrase with an equal sign.