Algebra 2 – Calculator Directions

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Algebra 2 – Calculator Directions
Follow the steps below to use a graphing calculator
to graph the linear system and determine the solution.
y  3x  5
y   2 x  10
To graph the lines:
1. Using the Y= screen, enter the two lines.
2. Check to be sure all PLOTS are turned off.
3. Set the standard viewing window.
4. GRAPH.
To find the point of intersection:
5. Use CALC (2nd TRACE) — #5:intersect.
6. Use the arrow keys to move the cursor as close
as you can to the point of intersection.
7. When asked “First curve?” note in the upper
left-hand corner that it says: Y1=3x–5.
Press ENTER.
8. When asked “Second curve?” note in the upper
left-hand corner that it says: Y2= –2x+10.
Press ENTER.
9. When asked “Guess?” press ENTER.
10. The calculator will give you the coordinates of
the point of intersection.
Use a graphing calculator to graph the linear
system and determine the solution.
x  y  2
2x  3y   9
To graph the lines:
1. Solve each equation for y.
2. Enter the two lines (Y=).
3. Check to be sure all PLOTS are turned off.
4. Set the standard viewing window.
5. GRAPH.
(Note: A shortcut for steps 4 and 5 is to use
ZOOM — #6:ZStandard.)
To find the point of intersection:
6. Use CALC (2nd TRACE) — #5:intersect.
Use a graphing calculator to graph the linear
system and determine the solution. (Round
answers to the nearest tenth.)
y   0.3x  1.8
y  0.6 x  1.5
1. Use the standard viewing window.
(Or use ZOOM — #6.)
2. CALC (2nd TRACE) — #5:intersect.
Use a graphing calculator to graph the line
y  3x  4 .
Then follow the steps below to find the value of
y when x = 0, 1, and –3. (Round answers to
integers.)
1. Use TRACE.
2. As you look at the x- and y-coordinates at
the bottom of the window, use the leftarrow or right-arrow to move the cursor to
the appropriate points.
3. Because the coordinates are given as
decimals, round to the nearest whole
number to find the requested values.
Use a graphing calculator to graph the line
y   2x  3 .
(a) Use TRACE to find the value of y when
x = 0, 4, and –2. (Round answers to
integers.)
(b) You can avoid the decimals by using the
“friendly screen” instead of the standard
viewing window. Follow the steps
below to set the “friendly screen.” Then
use TRACE again to find the value of y
when x = 0, 4, and –2.
1. Press Zoom #4: ZDecimal
2. The calculator will graph the line
again, but with a different window.
3. Check the window values. These are
the values for the friendly screen.
4. Use TRACE again to find the
requested values.
Determine whether the lines given by the
equations below are parallel, perpendicular,
coinciding, or intersecting but not
perpendicular. Then graph the lines on a
graphing calculator to verify your answer.
(Use the standard viewing window or the
friendly screen.)
2x  y   3
y  2x  2
(a) Use the friendly screen on a graphing
calculator to graph the system of
equations. Then use TRACE to find the
solution of the system:
y  x  3
y   2x  3
(b) Use CALC (2nd — TRACE to find the
solution of this system:
y  3x  1
y   2x  4
Use the “friendly screen” (Zoom #4) on a
graphing calculator to graph each line or
curve. Then use the TRACE feature to find
the x-intercept(s).
Follow the steps below to use a
graphing calculator to evaluate the
cube root.
3
(a) 2 x  3 y  6
(b) 4 x  y  2
1.
2.
3.
4.
512
Go to
– #4: 3 ( .
Enter the number 512.
Close the parentheses.
Press
.
(c) y  x 2  2 x  3
(d) y   x 2  x  2
Use a graphing calculator to evaluate the
expression.
(Use
to raise to a power.)
64  67
Follow the steps below to use a graphing
calculator to multiply the numbers in
scientific notation.
(3.57 x 1016 ) x (2.94 x 1011 )
1. Go to
and put the calculator in SCI
mode. (Scientific notation.)
2. Press
to go back to the home screen.
3. Enter the number that is in front of the
power of 10.
4. Press
. (This is 2nd – EE.)
The calculator will put E (for the exponent
on 10.)
5. Enter the exponent.
6. Continue with the rest of the problem,
following the same steps.
7. Write your answer using correct scientific
notation.
8. Remember to put the calculator back in
normal mode.
Follow the steps below to use a graphing
calculator to divide the numbers in scientific
notation. Round to the nearest hundredth.
4.56 x 1012
2.35 x 1015
1. Go to
and put the calculator in SCI
mode. (Scientific notation.)
2. Press
to go back to the home screen.
3. Enter the number that is in front of the
power of 10.
4. Press
. (This is 2nd – EE.)
The calculator will put E (for the exponent
on 10.)
5. Enter the exponent.
6. Continue with the rest of the problem,
following the same steps.
7. Write your answer using correct scientific
notation.
8. Remember to put the calculator back in
normal mode.
Follow the steps below to use a graphing calculator to
create a box-and-whisker plot of the following list of
numbers: 5, 6, 9, 7, 1, 2, 5, 4, 3, 8. Then sketch the
plot below.
a. STAT – EDIT Enter the numbers into L1.
b. STAT PLOT
Turn on Plot #1.
Choose the first box-andwhisker option in the “Type.”
Xlist: L1.
Freq: 1
c. WINDOW
Choose an appropriate window
for the list of numbers.
d. GRAPH
Helpful Hints:
Fraction should be entered in with
parentheses around them.
EX:
1
2
Press
Helpful Hints:
= A negative sign
= Subtraction sign
Helpful Hints:
When you have entered a long
problem and made a mistake after
you have entered it.
Press
and use the
arrow keys change you mistake.
Helpful Hints:
When you have entered a problem
and forgot something.
Press
and use the arrow keys insert
whatever you forgot.
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