advertisement

A11­4PatternsAndFunctions.notebook Algebra 1 Ch.1 Notes Page 22 P22 1­4 Patterns and Functions September 15, 2014 Functions A Function is a relationship that has exactly one (y) output value for each (x) input value. X is called the Control or Independent Variable (Input) Y is called the Dependent Variable (Output) Y depends on X Sep 2­8:31 AM Oct 21­7:28 AM Write a Function Rule for the Following Information A Function rule is an equation that describes a functional relationship. For Every Value of X, There is only ONE Value of Y. y = 3x + 2 x y 1 3 2 6 3 9 4 12 Nov 4­8:35 AM Domain and Range Domain values are the x (independent) values of a function x y 1 5 2 8 3 11 4 14 Apples Cost 1 .35 2 .70 3 1.05 4 1.40 Nov 4­8:39 AM HW24 (1­4) P29 #1­8 Range values are the y (dependent) values of a function 55 Nov 4­8:53 AM Sep 15­12:11 PM 1