Texas Instruments TI-73VSC Teachers Guide - Page 22
Look at T-chart
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Patterns and Relations 17 Activity 4: Stadium Walls 10. Ask: What remains the same or constant? (1) What changes or varies? (L-number of lengths varies) What will the graph of the line represented by these equations look like? 11. The TI-73 uses X and Y when graphing, so change the equation B = 3L + 1 to Y = 3X + 1 using the Y= editor. a. On each line where there is an entry, clear the Y= editor. & : b. Now enter the equation. [ I \ Y 12. View the window. ' 13. Discuss the possible values for X and Y. Ask questions such as: What does X represent? (length) Do you need negative values for Xmin? (no) What would you suggest for Xmin? (Look at T-chart data.) What do you suggest for Xmax? What does Y represent? (number of beams) Do you need negative values for Ymin? What do you suggest for Ymin? (Look at T-chart data.) What do you suggest for Ymax? Should it be smaller or larger than Xmax? At the right is an example of an appropriate window. © 1998 TEXAS INSTRUMENTS INCORPORATED