7th Grade Math Chapter 3

variable

letter that represents a value that can vary

coefficient

the number multiplied by a variable

constant

number that does not change

evaluate

solve

substitute

replace a variable with a number

algebraic expression

expression that contains at least one variable

additive inverse

the opposite of a number

linear equation

an equation that gives a straight line when plotted on a graph.

like terms

terms that have the same variable raised to the same power

unlike terms

terms that have the variables that are different or raised to different powers

distributive property

states that multiplying a sum or difference by a number is the same as multiplying each addend separately and then adding the products

multiplicative inverse

the reciprocal of a number

integer

a member of the set of whole numbers and their opposites.

opposite

the number that is the same absolute value but different sign.

no solution

an equation that has no answer

infinite solutions

an equation that has many solutions (unlimited)

term

a number, variable or numbers and variables multiplied together