Chapter 5: Linear Systems Name
Section 2: Using Algebra Date
Topics in Algebra 1 © 2001, 2002 Texas Instruments Student Worksheet 5-24
³ Try-It!é on Your TI.73
You will:
•
Graph two lines of a system of equations.
•
If the lines intersect, use the
1
feature Solver to find the X value of the solution to the
system.
•
Find the Y value by using
X
on the home screen.
Find the solution of the system: Y1 =
L
4X + 2
Y2 = 2X
N
2.5
Notice that these equations are already in the form of y = mx + b. They are in the form to enter
into your calculator.
To Do This Press Display
1. Exit the Topics in Algebra 1
application and clear the Home
screen.
- l
á
EXITâ :
2. It is good practice to look at the
graph of the system before you use
the Solver feature. Enter L4X + 2 as
Y1 and 2X N 2.5 as Y2 in the
Y= editor.
Note: See TIp 3: Graphing a Function in the
Standard Window for more information.
& :
a 4 I \ 2
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2 I T 2 ` 5
3. Select the Zoom Decimal viewing
window.
Remember: You will have to adjust the viewing
window depending on the system of equations. You
can see the intersection of the lines in the ZDecimal
window for this example.
( 8:ZDecimal
4. The graph displays. Since this system
has one solution, find the numerical
solution next using the Solver
feature on the TI-73.
Important Reminder: Before you use the intersect
feature, use your knowledge about the equations of
lines to determine if the lines are parallel or the same
line.
5. Use the 1 menu item called
Solver to find the calculated
numerical solution.
1
6:Solver
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