The number in front of a variable such as 3x , 2y , -7n.|The ratio of the difference of y divided by the difference in x.|A relation between two or more quantity where every input value has one output value.|A value that remains the same and does not change.|A relation between two quantities where the rate of change is constant.|A mathematical statement that two expressions are equal.|The letter that represents an unknown quantity.|statement that shows the relationship between two numbers or algebraic expressions that are not equal|A whole number that can be positive or negative.|When the number can be written as a ratio of a/b.