You can display plot components with varying degrees of transparency.

Click the plot object or on a specific curve to select it.

From the Plot menu, select Transparency. Alternatively, use the context-sensitive options in the Context Panel.

Select the desired transparency. (0 means fully opaque and 1 means fully transparent.)

Click OK.

You can also customize the degree of transparency for your plot component.

Click the plot object or on a specific curve to select it.

From the Plot menu, select Transparency. Alternatively, use the context-sensitive options in the Context Panel.

Select Set...

Move the slider, left or right, until the desired transparency is reached.

Click OK