The Graphing Calculator

CHAPTER 3. INTRODUCTION TO GRAPHING
140
y
y
10
10
y=
−10
10
x
−10
−10
The Graphing Calculator
1. Enter the equation y = 2x + 3 into the Y= menu, then select 6:ZStandard
from the ZOOM menu.
Report the graph on your homework as follows:
y
y = 2x + 3
10
−10
10
−10
Second Edition: 2012-2013
x+5
10
−10
3.2
√
x
x
3.2. THE GRAPHING CALCULATOR
141
3. Enter the equation y = 12 x−4 into the Y= menu, then select 6:ZStandard
from the ZOOM menu.
Report the graph on your homework as follows:
y
10
−10
y = 12 x − 4
10
x
−10
5. Enter the equation y = 9 − x2 into the Y= menu, then select 6:ZStandard
from the ZOOM menu.
Report the graph on your homework as follows:
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142
CHAPTER 3. INTRODUCTION TO GRAPHING
y
10
−10
10
−10
x
y = 9 − x2
7. Enter the equation y = 12 x2 −3 into the Y= menu, then select 6:ZStandard
from the ZOOM menu.
Report the graph on your homework as follows:
y
y = 12 x2 − 3
10
−10
10
x
−10
9. Enter the equation y =
from the ZOOM menu.
Second Edition: 2012-2013
√
x into the Y= menu, then select 6:ZStandard
3.2. THE GRAPHING CALCULATOR
143
Report the graph on your homework as follows:
y
10
y=
−10
√
10
x
x
−10
√
11. Enter the equation y = x + 3 into the Y= menu, then select 6:ZStandard from the ZOOM menu.
Report the graph on your homework as follows:
y
10
y=
−10
√
x+3
10
x
−10
13. Enter the equation y = |x| into the Y= menu, then select 6:ZStandard
from the ZOOM menu.
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144
CHAPTER 3. INTRODUCTION TO GRAPHING
Report the graph on your homework as follows:
y = |x|
y
10
−10
10
x
−10
15. Enter the equation y = |x+2| into the Y= menu, then select 6:ZStandard
from the ZOOM menu.
Report the graph on your homework as follows:
y
y = |x + 2|
10
−10
10
−10
Second Edition: 2012-2013
x
3.2. THE GRAPHING CALCULATOR
145
17. Enter the equation y = x2 + x − 20 into Y1= of the Y= menu, as shown
in the first image below, then select 6:ZStandard from the ZOOM menu. In
the WINDOW menu, make the changes shown in the second image to Ymin
and Ymax, then push the GRAPH button to produce the graph shown in the
third image.
Report the graph on your homework as follows:
y
y = x2 + x − 20
30
−10
10
x
−30
19. Enter the equation y = −x2 +4x+21 into Y1= of the Y= menu, as shown
in the first image below, then select 6:ZStandard from the ZOOM menu. In
the WINDOW menu, make the changes shown in the second image to Ymin
and Ymax, then push the GRAPH button to produce the graph shown in the
third image.
Report the graph on your homework as follows:
Second Edition: 2012-2013
CHAPTER 3. INTRODUCTION TO GRAPHING
146
y
30
−10
10
−30
x
y = −x2 + 4x + 21
21. Enter the equation y = 2x2 −13x−24 into Y1= of the Y= menu, as shown
in the first image below, then select 6:ZStandard from the ZOOM menu. In
the WINDOW menu, make the changes shown in the second image to Ymin
and Ymax, then push the GRAPH button to produce the graph shown in the
third image.
Report the graph on your homework as follows:
y
y = 2x2 − 13x − 24
50
−10
10
x
−50
23. Enter the equations y = 2x + 1 and y = x + 8 into Y1= and Y2= of
the Y= menu, as shown in the first image below, then select 6:ZStandard
from the ZOOM menu. In the WINDOW menu, make the changes shown in
Second Edition: 2012-2013
3.2. THE GRAPHING CALCULATOR
147
the second image to Ymin and Ymax, then push the GRAPH button. Press
the TRACE button, then use the arrow keys to move the cursor as close as
possible to the point of intersection, as shown in the third image.
Report the graph on your homework as follows. As the TRACE key is only an
approximation, estimates of the point of intersection may vary a bit.
y
20
(6.91, 14.82)
y =x+8
−5
y = 2x + 1
15
x
−5
25. Enter the equations y = 12 x and y = 23 x−3 into Y1= and Y2= of the Y=
menu, as shown in the first image below, then select 6:ZStandard from the
ZOOM menu. In the WINDOW menu, make the changes shown in the second
image to Ymin and Ymax, then push the GRAPH button. Press the TRACE
button, then use the arrow keys to move the cursor as close as possible to the
point of intersection, as shown in the third image.
Report the graph on your homework as follows. As the TRACE key is only an
approximation, estimates of the point of intersection may vary a bit.
Second Edition: 2012-2013
CHAPTER 3. INTRODUCTION TO GRAPHING
148
y
20
(18.08, 9.04)
y = 12 x
x
35
−5
−5
y = 23 x − 3
27. Enter the equations y = 5 − x and y = −3 − 2x into Y1= and Y2= of
the Y= menu, as shown in the first image below, then select 6:ZStandard
from the ZOOM menu. In the WINDOW menu, make the changes shown in
the second image to Ymin and Ymax, then push the GRAPH button. Press
the TRACE button, then use the arrow keys to move the cursor as close as
possible to the point of intersection, as shown in the third image.
Report the graph on your homework as follows. As the TRACE key is only an
approximation, estimates of the point of intersection may vary a bit.
y
25
(−7.76, 12.76)
y = 5−x
−25
5
−5
Second Edition: 2012-2013
x
y = −3 − 2x