Texas Instruments TI-83 Plus Manual Book page 145

Chapter 5: Linear Systems
Section 2: Using Algebra
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
2. Solve each of the systems you found in
using your calculator. Write an explanation of how you used your calculator.
a. Cathy's pay rate
b. Cathy and Brenda's shopping trip
Topics in Algebra 1
Name
Date
Extra Practice: Using Substitution or Elimination
© 2001, 2002 Texas Instruments
b. 3x + y = 6
1 1
x N y = L1
2 3
Student Worksheet 5-22
2
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3
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