# Graphing Systems of Inequalities - Shade a Single Region (with correctness)

**URL:** <https://cl.desmos.com/t/graphing-systems-of-inequalities-shade-a-single-region-with-correctness/4736>\
**Category:** Questions\
**Tags:** validation, correctness\
**Created:** [February 21, 2023, 10:16pm UTC](https://cl.desmos.com/t/graphing-systems-of-inequalities-shade-a-single-region-with-correctness/4736 "2023-02-21T22:16:38Z")\
**Posts on this page:** 11\
**Page:** 1

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**Author:** ![LAMitchellMath](https://avatars.discourse-cdn.com/v4/letter/l/df788c/32.png) [@LAMitchellMath](https://cl.desmos.com/u/LAMitchellMath)\
**Post date:** [February 21, 2023, 10:16pm UTC](https://cl.desmos.com/t/graphing-systems-of-inequalities-shade-a-single-region-with-correctness/4736/1 "2023-02-21T22:16:38Z")

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Good afternoon!

I am trying to create a self checking activity where students practice graphing systems of inequalities - that emulate the graphing question type on the new STAAR test. I have found similar activities but not quite what I am looking for.

I need students to graph two lines separately, decide on the line type for each, then click in the region they want to shade. I will appreciate any and all help I can get!

Here’s what I have so far:

> **[STAAR New Item Type - Graphing Systems of Inequalities • Activity by Leigh...](https://classroom.amplify.com/activity/63f5342479729a0337405d2c)**
>
> by Leigh Ann Mitchell

I have also attached a picture of what it should look like on STAAR.

 ![Untitled drawing (43)](https://canada1.discourse-cdn.com/flex031/uploads/desmos/original/2X/2/20f6aaebd3bf350d587e209ff03b98a8853fa4af.jpeg)

Thank you!!!

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**Author:** ![Daniel\_Wekselgreene](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/daniel_wekselgreene/32/1819_2.png) [@Daniel\_Wekselgreene](https://cl.desmos.com/u/Daniel_Wekselgreene)\
**Post date:** [February 22, 2023, 7:11am UTC](https://cl.desmos.com/t/graphing-systems-of-inequalities-shade-a-single-region-with-correctness/4736/2 "2023-02-22T07:11:50Z")

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I think this does what you want. Test it out and see what you think. [system of inequalities tool • Activity Builder by Desmos](https://teacher.desmos.com/activitybuilder/custom/63f5b58fd7d30c97caa323d0)

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**Author:** ![LAMitchellMath](https://avatars.discourse-cdn.com/v4/letter/l/df788c/32.png) [@LAMitchellMath](https://cl.desmos.com/u/LAMitchellMath)\
**Post date:** [February 22, 2023, 7:45pm UTC](https://cl.desmos.com/t/graphing-systems-of-inequalities-shade-a-single-region-with-correctness/4736/3 "2023-02-22T19:45:50Z")

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That is EXACTLY what I wanted!

How do I know what the region number is? I’m not sure how to read this:

 ![image](https://canada1.discourse-cdn.com/flex031/uploads/desmos/original/2X/0/087c98c2faa8b2d7a57131303dc9e754e36922f2.png)  
Thank you!!!

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**Author:** ![Daniel\_Wekselgreene](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/daniel_wekselgreene/32/1819_2.png) [@Daniel\_Wekselgreene](https://cl.desmos.com/u/Daniel_Wekselgreene)\
**Post date:** [February 22, 2023, 8:44pm UTC](https://cl.desmos.com/t/graphing-systems-of-inequalities-shade-a-single-region-with-correctness/4736/4 "2023-02-22T20:44:18Z")

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I added in some labels that are only visible when you are editing the graph that show the region number. You can also move the s\_haded slider to see which region lights up.

> **[system of inequalities tool • Activity Builder by Desmos](https://teacher.desmos.com/activitybuilder/custom/63f5b58fd7d30c97caa323d0)**
>
> by Daniel Wekselgreene

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<div class="post-metadata">

**Author:** ![LAMitchellMath](https://avatars.discourse-cdn.com/v4/letter/l/df788c/32.png) [@LAMitchellMath](https://cl.desmos.com/u/LAMitchellMath)\
**Post date:** [March 24, 2023, 8:03pm UTC](https://cl.desmos.com/t/graphing-systems-of-inequalities-shade-a-single-region-with-correctness/4736/5 "2023-03-24T20:03:35Z")

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Hello!

What should I delete out if I want to just check a single inequality? Or do I need to just start over?

THANKS!!!

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**Author:** ![Daniel\_Wekselgreene](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/daniel_wekselgreene/32/1819_2.png) [@Daniel\_Wekselgreene](https://cl.desmos.com/u/Daniel_Wekselgreene)\
**Post date:** [March 24, 2023, 11:18pm UTC](https://cl.desmos.com/t/graphing-systems-of-inequalities-shade-a-single-region-with-correctness/4736/6 "2023-03-24T23:18:39Z")

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I added in a second screen with a single inequality. It works mostly the same, but I had to change it so that they need to click on the line itself to change the shaded side instead of the region.

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<div class="post-metadata">

**Author:** ![LAMitchellMath](https://avatars.discourse-cdn.com/v4/letter/l/df788c/32.png) [@LAMitchellMath](https://cl.desmos.com/u/LAMitchellMath)\
**Post date:** [March 27, 2023, 1:02pm UTC](https://cl.desmos.com/t/graphing-systems-of-inequalities-shade-a-single-region-with-correctness/4736/7 "2023-03-27T13:02:32Z")

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Perfect! Thank you so much. I really appreciate all your help!

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**Author:** ![Conrado\_Gonzalez](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/conrado_gonzalez/32/1891_2.png) [@Conrado\_Gonzalez](https://cl.desmos.com/u/Conrado_Gonzalez)\
**Post date:** [March 2, 2024, 5:54pm UTC](https://cl.desmos.com/t/graphing-systems-of-inequalities-shade-a-single-region-with-correctness/4736/8 "2024-03-02T17:54:06Z")

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This is great I will try to make it self check

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**Author:** ![Daniel\_Wekselgreene](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/daniel_wekselgreene/32/1819_2.png) [@Daniel\_Wekselgreene](https://cl.desmos.com/u/Daniel_Wekselgreene)\
**Post date:** [March 2, 2024, 6:59pm UTC](https://cl.desmos.com/t/graphing-systems-of-inequalities-shade-a-single-region-with-correctness/4736/9 "2024-03-02T18:59:59Z")

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Before you go to that trouble, I have a further developed set that has self-checking: [Solving and graphing inequalities templates • Activity Builder by Desmos](https://teacher.desmos.com/activitybuilder/custom/65308bac712b3955b06b4848)

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**Author:** ![Conrado\_Gonzalez](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/conrado_gonzalez/32/1891_2.png) [@Conrado\_Gonzalez](https://cl.desmos.com/u/Conrado_Gonzalez)\
**Post date:** [December 7, 2024, 3:39am UTC](https://cl.desmos.com/t/graphing-systems-of-inequalities-shade-a-single-region-with-correctness/4736/10 "2024-12-07T03:39:00Z")

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Daniel, this is awesome template activity. we need to talk, I have to really good ideas and have developed some pretty good stuff, but I sure could use an individual to collaborate with.

[cogonzalez@cvusd.us](mailto:cogonzalez@cvusd.us)

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<div class="post-metadata">

**Author:** ![Daniel\_Wekselgreene](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/daniel_wekselgreene/32/1819_2.png) [@Daniel\_Wekselgreene](https://cl.desmos.com/u/Daniel_Wekselgreene)\
**Post date:** [December 7, 2024, 6:06pm UTC](https://cl.desmos.com/t/graphing-systems-of-inequalities-shade-a-single-region-with-correctness/4736/11 "2024-12-07T18:06:14Z")

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Sure - send me a message with what you’re thinking. You can message me here or on bluesky.
