Chapter 5: Linear Systems Name
Section 2: Using Algebra Date
Topics in Algebra 1 © 2001, 2002 Texas Instruments Student Worksheet 5-22
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 =
2
3
.
Explain how you found the exact answer if the calculator only gave an approximate answer. Verify your answer!
a. y =
L
1.2x + 3.725
3x
N
y = 8.875
b. 3x + y = 6
1
2
x
N
1
3
y =
L
1
2. Solve each of the systems you found in
Extra Practice: Using Substitution or Elimination,
using your calculator. Write an explanation of how you used your calculator.
a. Cathy’s pay rate
b. Cathy and Brenda’s shopping trip
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