Using Graphs to Relate Two Quantities

Using Graphs to Relate Two Quantities

Reading Graphs

• In a graph, there are three things that can help us completely analyze the graph:

• TITLE

• AXES

• RELATIONS BETWEEN AXES: Linearly increasing, Linearly decreasing, or Constant relation

Linearly Increasing Relation

• A graph relating two quantities is linearly increasing if with the increase in one quantity, the other quantity also increases

Linearly Decreasing Relation

• A graph relating two quantities is linearly decreasing if with the increase in one quantity, the other quantity decreases.

Constant Relation

• A graph relating two quantities has a constant relation if with the increase in one quantity, the other quantity does not change i.e. remains constant.

Multiple Select

Check the types of relations between x and y on a graph

• Linearly increasing

• Linearly random

• Linearly Decreasing

• Constant

• Zero Relation

Multiple Choice

How would you describe the relation between x and y

• Linearly increasing

• Linearly decreasing

• Constant

Multiple Choice

In this type of relation, as one variable changes, the other variable ...

• increase

• decreases

• remains constant

• is zero

Variables label the x and y axis of the graph

Open Ended

What are the variables on this graph?

Multiple Choice

How are the variables, plant growth and time, related?

• Linearly increasing

• Linearly decreasing

• Non-linear

• Constant

A graph can be used to show the relationship described in a table.

• We can make a graph to show the linearly increasing relation between the number of DVD’s bought and their total cost.

Fill in the Blank

Based on this data table the variables for the graph would be Number of DVDs bought and _________________

Open Ended

What are the variables for the given data table

Your job is to determine variables and their relationship on graphs