Chapter 5: Linear Systems Name
Section 1: Using Graphs & Tables Date
Topics in Algebra 1 © 2001, 2002 Texas Instruments Student Worksheet 5-4
³ Try-It!é on Your TI-83 Plus or TI-73
You will:
• Graph two lines of a system of equations.
• Use r to locate the intersection of the lines.
• Use y 0 and y - to locate the exact solution of the system of equations.
Find the solution of the system: Y1 = L4X + 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 (TI.83 Plus shown)
1. Exit the Topics in Algebra 1
application and clear the Home
screen.
y 5
á
EXITâ ‘
2. First, enter L4X + 2 as Y1 and
2X N 2.5 as Y2 in the Y= editor.
Note: See ³TIp 3: Graphing a Function in
the Standard Window for more information.
Note: On the TI-73, use I rather than
„.
o ‘
Ì 4 „ Ã 2
† ‘
2 „ ¹ 2 Ë 5
3. Select the Zoom Decimal viewing
window. The graph displays.
Remember: You 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.
TI-83 Plus:
q
4:ZDecimal
TI-73:
q 8:ZDecimal
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