# Study Plan

Skill Development 18 (#Temporarytag) | |
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Introduction_to_Functions - Graphic | |

Introduction_to_Functions | Objectives and success criteria | Audio signpost | Study Plan | Validation and Assessment |

**Plan and/or Tasks: **

**Prerequisites:**

Learners need to understand functions.

**Glossary:**

*Independent Variable:* The values of an independent variable in a function are not determined by the other variable. In this section, the independent variable is x. Or, from the example given under "Why,", the independent variable would be the number of hours worked.

*Dependent Variable:* The values of this variable in a function are determined by the independent variable. In the example given under "Why?", the dependent variable is the amount of pay which depends on the number of hours worked.**Experience: **

1. Read the information and examples of Defining functions and finding functional values.

2. Using the first example, redo it on another piece of paper without looking at the answer. Then, check your work.

**Key Questions (Critical Thinking Questions):**

Answer the following:

1. Which represents a function a) y = 4x +1 or b)

2. Does the following example represent a function or a relation? The number of diet sodas sold increases as the outside temperature increases.

3. Does the following represent a function or a relation? The sales of cups of coffee decreases as the outside temperature increases.

**Skill Exercises: **

Complete in Khan Academy: Views of a Function