Chapter C, Problem 1E

In the following exercises, you will explore some of your calculator's graphing capabilities. Answers are not given in the bath of the book.

Exploring the "Zoom Standard" command. Use your calculator to graph $y=2x-1$, as discussed in this section. When that graph is on the screen, select the TI "Zoom Standard" command from the "Zoom menu" or the Casio "STD" command from the "V-WIN" menu by doing the following:

$\text{TI}-83/84$	• press $\boxed{\text{ZOOM}}$ • select option 6 “Standard” or “ZStandard” by either: • using the down arrow to scroll down to that option and pressing $\boxed{\text{ENTER}}$, or • typing the number “6”
Casio	• press $\boxed{\text{SHIFT}}$ • pres $\boxed{\text{V-WIN}}$ (i.e., $\boxed{\text{F3}}$) • press $\boxed{\text{STD}}$ (i.e., $\boxed{\text{F3}}$)

a. What is the result?

b. How else could you accomplish the same thing without using any zoom commands?

To determine

(a)

To find:

The result of the calculator to graph the line $y=2x-1$.

Answer to Problem 1E

Solution:

The result of the calculator to graph the line $y=2x-1$ is shown in figure $\left(7\right)$.

Explanation of Solution

Given:

The equation of the line,

$y=2x-1$

Approach:

To graph the line $y=2x-1$ on $\text{TI}-83$ graphing calculator, follow these steps,

• Set the calculator up for instructions to graph by pressing $\boxed{\text{Y}=}$. This produces the screen as shown below.

Figure $\left(1\right)$

• To type the symbol $x$ press $\boxed{X.T.\theta .n}$, then type the equation $\boxed{2x-1}$. After typing the equation press the $\boxed{\text{ENTER}}$ button. This produces the screen as shown below,

Figure $\left(2\right)$

• Press the $\boxed{\text{WINDOW}}$ button to graph the equation by entering the values as shown below. “Xmin” and “Xmax” refers to the left and right boundaries of the graph, respectively. “Ymin” and “Ymax” refers to the lower an upper boundary of the graph, respectively. “Xscl” and “Yscl” refer to the scales on the x and y axes.

Figure $\left(3\right)$

• Press the $\boxed{\text{GRAPH}}$ button to plot the graph for the line.

Figure $\left(4\right)$

• Now press the $\boxed{\text{ZOOM}}$ button.

• Select the “Zoom Standard” command from the “Zoom Menu”.

Figure $\left(5\right)$

• Type number 6. The graph of the equation $y=2x-1$ is shown below.

Figure $\left(6\right)$

Therefore, the result of the calculator to graph the line $y=2x-1$ is shown in figure $\left(7\right)$.

Conclusion:

Hence, the result of the calculator to graph the line $y=2x-1$ is shown in figure $\left(7\right)$.

To determine

(b)

To find:

The alternate way to accomplish the same thing without using zoom command.

Answer to Problem 1E

Solution:

The same graph can be obtained by pressing the $\boxed{\text{TRACE}}$ or $\boxed{\text{GRAPH}}$ button.

Explanation of Solution

Calculation:

The same graph can be obtained by pressing the $\boxed{\text{TRACE}}$ or $\boxed{\text{GRAPH}}$ button.

Conclusion:

Hence, the same graph can be obtained by pressing the $\boxed{\text{TRACE}}$ or $\boxed{\text{GRAPH}}$ button.