Distribute copies of the arrow on a sheet of graph paper.

First be sure that all students realize that there are 7 vertices on the arrow. Have students label the top vertex A and letter all the rest of the vertices in a clockwise order from B through G.

Students should then find the coordinates of the 7 vertices and record them on the paper.

Students will then enter the x-coordinates in L1 and the y-coordinates in L2. Set up Plot 1 for L1 and L2 using the connected line graph and the dot. (Setting up a Scatter Plot)

Students should press Zoom 4 (Quadrant 1) to view their arrow. Ask students "Do you see what I see?"

Ask the students to double only the x-coordinate in each of the ordered pairs.  Enter the new ordered pairs in L3 and L4.  (Set up a new scatter plot for L3 and L4)

Students should press GRAPH and observe what has happened to their arrow.  Ask students to describe what happened when the x-coordinates were doubled.

Ask the students to double only the y-coordinate in each of the ordered pairs.  Enter the new ordered pairs in L5 and L6.  (Set up a new scatter plot for L5 and L6)

Students should press GRAPH and observe what has happened to their arrow.  Ask students to describe what happened when the y-coordinates were doubled.

Ask the students to double both the x-coordinate and y-coordinated in each of the ordered pairs.  Enter the new ordered pairs in L5 and L6.  (Set up a new scatter plot for L5 and L6)

Students should press GRAPH and observe what has happened to their arrow.  Ask students to describe what happened when both the x-coordinates and the y-coordinates were doubled.