Texas Instruments TI-83 Plus Manual Book page 149

Chapter 5: Linear Systems
Section 2: Using Algebra
To Do This
13. Enter 2X N 2.5 to find the Y2 value.
Notice that the output is L1 and
Y1 = Y2 at X = 0.75.
The solution is (0.75, L1). Press
* to see if this agrees with the
graph of the lines!
Extra Practice: Using Your Calculator to Find Solutions
1. Use your calculator to find the solution to each system of equations. Write the solution and a
description of how you used your calculator to find and verify the solution.
Remember: You need to rewrite the equations in the form y = mx + b to work with your
calculator.
Note: If the calculator gives the value .6666666667 or X=.66666666666666 in Solver, the exact answer is most likely X =
Explain how you found the exact answer if the calculator only gave an approximate answer. Verify your answer!
a. y = L1.2x + 3.725
3x N y = 8.875
Topics in Algebra 1
Name
Date
Press
I T
2 2
b. 3x + y = 6
1
2
© 2001, 2002 Texas Instruments
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5
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x N y = L1
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Student Worksheet 5-26
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