Lesson Plan 1: The Phone Bill Problem - Linear Functions
In this lesson, students will learn how to write an equation of a linear function when given a set of data. They will interpret the meaning of the slope and y-intercept and then use the equation to find other values of x and y.
One 50-minute class period
Students will be able to:
Make sense of a set of data and plot it on a graph.
Find the equation of the line that contains the data points.
Understand the meaning of the slope and y-intercept.
Use the equation to predict other x- and y-values.
Standards: Principles and Standards for School Mathematics, National Council of Teachers of Mathematics (NCTM), 2000: