### Student Page 2.1.3 Graphing with Desmos

Read the following instructions. Open Desmos on a computer, a smart phone, or an electronic tablet. Use the directions to plot the data from The Eyes Have It. What questions do you have? Share your graph with your group.

#### 1. Desmos.

##### (a)

Google โDesmos.โ

##### (b)

Choose Desmos Graphing Calculator.

##### (c)

Use with an Internet connection on a computer or download the app onto your smart phone or tablet free of charge.

#### 2. Plotting Points with Desmos.

##### (a)

Click on the add item menu, โ+โ (upper left). Choose table.

##### (b)

Enter the data from your table into Desmos.

##### (c)

Notice that points are being plotting as you type them.

##### (d)

You might not be able to see all of your points on the graph.

#### 3. Setting the Graphing Window With Desmos.

##### (a)

Click on the wrench icon in the upper right corner.

##### (b)

For the independent variable \(x\text{,}\) enter the low and high values for your data.

##### (c)

Choose a reasonable step size. The step is the interval between tick marks on the graph.

##### (d)

Include a title for the \(x\)-axis.

##### (e)

Repeat for the dependent variable, \(y\text{.}\)

#### 4. Grpahing an Equation.

##### (a)

On the left side of the screen, type in the equation you want to plot in the next entry line.

##### (b)

It will automatically appear on the graphing screen.

##### (c)

Troubleshoot and change the equation if it doesn't fit the data.