## Lesson: Graphing Integers

Developing the Concept

Now that students have been shown how to graph a linear function, it is time for them to try it. Be sure to stress the use of correct mathematical vocabulary. Also stress that the equation, table, and graph are different representations of the same function.

**Materials:** overhead transparency or poster paper, grid paper and rulers for students

**Preparation:** Draw a coordinate grid on a transparency or poster paper. Make a copy for each student. Use Learning Tool 20 in the *Learning Tools Folder.*

Give students two more equations to graph on their own, while you walk around the room helping individual students.

**Wrap-Up and Assessment Hints**

Students should be aware that they can also use a graph to complete the table of data for a function. Write the equation **x = 8 − y **on the chalkboard. Have students find two ordered pairs for the equation—for example, (7, 1) and (5, 3)—and locate them on a coordinate grid. (Use Learning Tool 20 in the *Learning Tools Folder.)* Tell them to connect the two points with a straight line. Then have them list other coordinates that the line passes through and verify that those coordinates also satisfy the equation.