# Shaded Areas in System of Inequalities

**URL:** <https://cl.desmos.com/t/shaded-areas-in-system-of-inequalities/2890>\
**Category:** Questions\
**Created:** [March 11, 2021, 12:20pm UTC](https://cl.desmos.com/t/shaded-areas-in-system-of-inequalities/2890 "2021-03-11T12:20:06Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![hmanaligod](https://avatars.discourse-cdn.com/v4/letter/h/ba9def/32.png) [@hmanaligod](https://cl.desmos.com/u/hmanaligod)\
**Post date:** [March 11, 2021, 12:20pm UTC](https://cl.desmos.com/t/shaded-areas-in-system-of-inequalities/2890/1 "2021-03-11T12:20:06Z")

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Good day everyone.

I am trying to show in the graph the corresponding shaded areas (no shade, double shaded, single shade) in a system of linear inequalities. Is there a way that this can be done?

> **[Highlighting Shaded Areas • Activity Builder by Desmos](https://teacher.desmos.com/activitybuilder/custom/604a09a6862e040cde66f9bb)**
>
> by Hans-Bernard Manaligod

Thanks again for all the help.

Hans

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<div class="post-metadata">

**Author:** ![Daniel\_Grubbs](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/daniel_grubbs/32/719_2.png) [@Daniel\_Grubbs](https://cl.desmos.com/u/Daniel_Grubbs)\
**Post date:** [March 11, 2021, 6:35pm UTC](https://cl.desmos.com/t/shaded-areas-in-system-of-inequalities/2890/2 "2021-03-11T18:35:18Z")

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Here’s what I did for the [graph](https://www.desmos.com/calculator/xsz7xrkrch). I reduced the opacity of the original shading so the highlighted ones are more apparent. You may want consider adding another choice for the “Original Graph”.  
Then, in the CL, add:

```auto
number(`n`): when choice1.isSelected(1) 1
             when choice1.isSelected(2) 2
             when choice1.isSelected(3) 3
             when choice1.isSelected(4) 4
             otherwise 0

```