Learning Outcomes
By the end of this section, you will be able to:
- Plot points on a rectangular coordinate system
- Complete a table of solutions for a linear equation
- Graph linear equations using ordered pairs
- Use slope-intercept form to plot equations of lines
- Interpret the slope and y-intercept for the equation of a line
In this module, you will investigate bivariate data. Bivariate data involves two measurements taken on each individual in a sample or population. We are often interested in exploring the relationship between the two variables that are measured. For example, the time you spend studying for a class and your grade in the class are related.
To examine the relationship between two quantitative variables we often graph the data points, which are ordered pairs, in the xy-plane. If the points seem to fall along a line, we can find the line which best fits the data and draw inferences. In this review section, we’ll practice plotting ordered pairs, graphing linear equations, and identifying and interpreting the slope and y-intercept for the equation of a line.
Recall for success
Look for red boxes like this one throughout the text. They’ll show up just in time to give helpful reminders of the math you’ll need, right where you’ll need it.
