Texas Instruments TI-83 Plus Manual Book page 129

Chapter 5: Linear Systems
Section 1: Using Graphs & Tables
Solution Search
Write the solution and explain how you found the solution using graphs and a table for each of
the problems below. Do the following for each problem.
•
Rewrite the system in slope-intercept form, y = mx + b, if necessary.
•
Use the slope-intercept form of the equations to draw a rough sketch of the lines. You can
verify your graph on your calculator. Estimate the solution so that you have an idea of how
many solutions there are and where the solution is located.
•
Search for the solution of the equation on the calculator using graphs and a table.
•
See ³ TIp™ 4: Creating a Table and ³ TIp 5: Adjusting the Viewing Window for additional
help with the calculator.
•
Remember to change your viewing window ( p ) or your table setting ( y - )
to do your search.
•
Explain how you found the solution.
•
Write out how you checked the solution.
Remember: The TI-73 and the TI-83 Plus only use the variables X and Y for graphs and tables. If an equation uses letters other than X and
Y, you have to change the variables in the problem to X and Y on the TI-73 and the TI-83 Plus. Use parentheses, if needed, when entering
the equations in the Y= editor.
1. y = 2x + 4
3x + y = L11
2. Lx + 3y = 4
1 10
x + y =
3 3
Topics in Algebra 1
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© 2001, 2002 Texas Instruments Student Worksheet 5-6