4.6 – Function Notation Textbook pg. 268 Objective: The student will properly use function notation in order to prepare for writing functions.

Function notation: describes y (dependent) as a function of x (independent) -use f(x) instead of y in equations Write cost as a function of time Write cost as a function of people Write distance as a function of gallons Write h as a function of g Write f as a function of x Write y as a function of x

8) g(t) = 2t – 1 when t = 1 and t = -3 Evaluate: 7) f(x) = 5x when x = 2 8) g(t) = 2t – 1 when t = 1 and t = -3

Writing a function rule: Find a pattern Test out the pattern Write pattern as a function 8) X Y 1 -2 2 -1 3 0 4 1

Name Date Period 4.6 – pg. 271 #16-19, 27, 37, 39