Home   Sitemap   Products   Programs   Support   Activities   Casio USA

Feel free to send us your comments or suggestions at: About our site Y-Intercept in Color Using the Casio CFX-9850G Color Graphing Calculator Using to discover the relationship of the y-intercept and the graph of a line. Materials: Casio CFX 9850G Graphing Calculator This is an excellent lesson for the beginning graphing calculator students as well as experienced users. The lesson enables the student to discover the relationship between the y-intercept and B in the equation y=mx+b. The lesson can also be done using the dynamic graphing function, see Y-Intercept using Dynamic Graphing. Y-Intercept in Color Select graph icon (5) Set your graphing window to the initial setting. (CFX-9850G)Shift F3 (to set graph window to initial setting) INIT (F1) setting the graph window -6.3 < X < 6.3 -3.1 < Y < 3.1 Graph these 3 equations Y1 = 2X - 3 Leave this equation in blue Y2 = 2X + 1 Highlight this equation and make it orange Have students compare the blue equation and the orange equation. What things are alike? What things are different? Graph and get a blue equation and an orange equation What things are alike? What things are different? Y3 = 2X + 2.5 Highlight the equation and make it green Compare the green, blue, and orange equations What things are alike? What things are different? Compare the green, blue and orange graphs What things are alike? What things are different? What do you conclude about the impact of the -3, +1, and +2.5? Submitted by Dr. Doug Brumbaugh, University of Central Florida. Updated: 1/3/99 by B. H. Giza