15+Analyzing+Graphs

== By: Stephanie Zavolas, Sharon Breckenridger, and Sara Luse

= = = Graph: a diagram showing the relation between variable quantities, typically of two variables, each measured along one of a pair of axes at right angles. A collection of points whose coordinates satisfy a given relation. =  Types of Graphs:   Bar Graph Line Graph Pie Graph  =**Example of a Coordinate System:** =



** Words To Know: **
Function: a relationship between input and output. The output depends on the input

Coordinate system: a system that uses coordinates to establish position

Y-axis: vertical axis

X-axis: horizontal axis

Origin: The point where both axes intersect. (0,0)

Ordered Pair: A set of numbers, or coordinates.

X value: x coordinate

Y value: y coordinate

Independent Variable/Quantity: On the x-axis, it’s the variable you can control. It’s the one you can control.

Dependent Variable/Quantity: The results *depend* on the independent variable. This goes on the y-axis.

=The Question: How do I analyze a graph?= = The Answer: You analyze a graph by looking at the data that is given to you first. Analyzing means to examine in detail. By examining the details of the data, you should be able to understood what the whole graph will be about. Then the questions after the graph/data chart helps you analyze it as well. =

=Give it a shot! =





⇧ This is an example of how you analyze a graph. By looking at the data and the chart, you are able to answer the questions.

= Identifying the Independent and Dependent Variables: =

__Dependent Variable/Quantity: The results *depend* on the independent variable. This goes on the y-axis when placing it on a graph.__
1. In general, the average price of gasoline slowly and steadily increases throughout the year: What is the Independent and Dependent Variable?

The Answer: Time is the independent variable as it is unaffected by the price of the gasoline, and the price is the dependent quantity as it is affected by the time.

=Helpful Websites to help you understand more: = [] [] [] []