A graph is a visual representation of mathematical data. Graphs make it easy to see how a set of values relate to each other. In this chapter, you hone your graph-reading skills. You also get some practice working with the most ubiquitous graph in mathematics, the xy-graph.
The Problems You’ll Work On
Here’s a preview of the types of problems you’ll solve in this chapter:
Working with graphs that display data: bar graphs, pie charts, line graphs, pictographs
Plotting points, calculating slope, and finding the distance between two points on the xy-graph
What to Watch Out For
The problems in this chapter provide practice in working with a variety of types of graphs. Here are descriptions of each type of graph, with some additional pointers for answering questions about the xy-graph.
A bar graph allows you to compare values that are independent from each other.
A pie chart provides a picture of how an amount is divided into percentages.
A line graph shows you ...