Texas Instruments TI-83 Plus Manual Book page 119

Chapter 4: Linear Inequalities
Section 2: Using Algebra
³ Try-It!é on Your TI.83 Plus or TI.73
To Do This
4. Trace the function. Notice that
where the graph is FALSE,
where the graph is TRUE,
5. Notice that
Y
1
through
X=1.5
6. Keep tracing and you see that the
graph jumps to
.
X>1.5
Find the exact set using algebra.
Solve 2X+4>7 . Does your answer
agree with this graph?
Additional Problems
Above, you solved the following inequalities using algebra. Now, graph the solution set of these
inequalities using your calculator. Compare the graph to your calculated answers above.
1.
6.4X>16
1
M
2. 2 XN2 2
M
3.
2XN2.1< 3.5
Topics in Algebra 1
;
Y =0
1
Y =1 .
1
(FALSE) up
=0
(when ).
X1.5
Y =1 (TRUE) when
1
© 2001 Texas Instruments
Name
Date
(continued)
Press
)
| or ~ to trace the
function
! or " to trace the
function
! or " to trace the
function
Display
(TI.83 Plus shown)
False
True
Student Worksheet 4-16