May+Computer+Lab+Course+III

= What is a function? Watch the video by clicking the link below and Then Answer the Questions = = Meat-A-Morphosis: An Introduction to Functions =

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Brainstorm:

1.After watching the video, how do you want to define a FUNCTION?

A FUNCTION IS ______________________________________________________________________________________________

2. What is DOMAIN? What is RANGE?

3. What is the input for Nuggetizer? _______________ What is the output for Nuggetizer? _______________

Cross out the WRONG answer The (input / output) is also called DOMAIN, it is usually represented by X; The (input / output) is also called RANGE, it is usually represented by Y;

4. **Directions ** Identify the [|domain and range of the relations]  below:  For example: { (-1,2), (2, 51), (1, 3), (8, 22), (9, 51) }  The domain (x) is(-1, 2, 1, 8, 9), the range is (y) (2, 51, 3, 22, 51)  { (-5,6), (21, -51), (11, 93), (81, 202), (19, 51) } Follow the first example, the domain is __________________________, the range is _________________________________

5. Evaluate the following functions for y (or what is y equals?) (1) y = x when x = 1 (2) y = x when x = 2 (3) y = 2x when x = 1 (4) y = 2x when x = 1/4 (5) y = -2x+5 when x = 1 (6) y = -2x+5 when x = 2 (7) y = 5 when x = 1 (8) y = 5 when x = 8 (9) y = 0.5x when x = 8 (10) y =0.5x when x =10