Module Four Lesson Two Notes

Guided Notes

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All About Functions Instruction

In this lesson, you will learn about relations, domain, range, and how to determine if a relation is a function, which is a special kind of relation.

Part One

This video will teach you all about relations, domain, and range! You may pause and rewatch the video as many times as needed.

If preferred, view the Part One video in a new window.

Part Two

This video is the second part of lesson two. It will teach you all about functions and how to determine if a relation is a function.

If preferred, view the Part Two video in a new window.

You Try 1

You try the following problem. When you are finished, check your work.

You are grocery shopping and buy the following: 5 Kiwi's for $1 each, 2 bags of chips for $3 each, 1 gallon of milk for $2, and 2 bags of coffee for $6 each.

Find the domain and range. Then express the relation as:

Ordered Pairs
A Table
A Graph
A Mapping

Check Your Work

You Try 1 Solution

If preferred, view the You Try 1 Solution video in a new window.

You Try 2

You try the following problem. When you are finished, check your work.

Determine if the following relations are functions or not.

Coordinate plane has squiggle line where each value of x has only 1 y-value.

Coordinate plane has squiggle line where some value of x have more than 1 y-value.

Coordinate plane has points J at negative 10 2, L at negative 2 6, K at origin, M at 0 negative 10, and N at 10 negative 6.

Coordinate plane has J at negative 4 0, L at negative 12 0, K at 8 8, M at negative 8 negative 10, and N at 10 negative 6.

Two ovals where each number in the left oval has arrow to a different number in right oval.

x	y
-1	3
0	2
-1	-5
0	-6
-1	-7

Check Your Work

You Try 2 Solution

If preferred, view the You Try 2 Solution video in a new window.

Citations

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