# Changing the Equations of Lines in Line Zapper

**URL:** <https://cl.desmos.com/t/changing-the-equations-of-lines-in-line-zapper/5228>\
**Category:** Questions\
**Created:** [November 15, 2023, 5:54pm UTC](https://cl.desmos.com/t/changing-the-equations-of-lines-in-line-zapper/5228 "2023-11-15T17:54:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Louis\_Peruso](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/louis_peruso/32/4628_2.png) [@Louis\_Peruso](https://cl.desmos.com/u/Louis_Peruso)\
**Post date:** [November 15, 2023, 5:54pm UTC](https://cl.desmos.com/t/changing-the-equations-of-lines-in-line-zapper/5228/1 "2023-11-15T17:54:39Z")

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Hello,

I am currently using the Line Zapper Desmos Activity and I am having a hard time changing the equations to match my two equations

y = -2x + 6  
y = -3x + 2

Could someone help me change these equations to fit the Line Zapper functionality. This would be super helpful.

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<div class="post-metadata">

**Author:** ![Louis\_Peruso](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/louis_peruso/32/4628_2.png) [@Louis\_Peruso](https://cl.desmos.com/u/Louis_Peruso)\
**Post date:** [November 15, 2023, 6:07pm UTC](https://cl.desmos.com/t/changing-the-equations-of-lines-in-line-zapper/5228/2 "2023-11-15T18:07:26Z")

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Also, it would be helpful if you could help me change the equations with these two graphs as well:

y = 3x + 4  
y = 2x - 4

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<div class="post-metadata">

**Author:** ![to-mmy](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/to-mmy/32/4643_2.png) [@to-mmy](https://cl.desmos.com/u/to-mmy)\
**Post date:** [November 23, 2023, 4:29am UTC](https://cl.desmos.com/t/changing-the-equations-of-lines-in-line-zapper/5228/3 "2023-11-23T04:29:49Z")

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> **[\[Copy of\] Line Zapper • Activity Builder by Desmos](https://teacher.desmos.com/activitybuilder/custom/655ecef34c6b021612f1c8e4)**
>
> In this lesson, students "zap" lines by identifying their solutions. Students begin by zapping individual lines and then turn their attention to systems of linear equations where a single "zap" aimed at a point of intersection will capture multiple...

Here, I think this is what you asked for. Just copy paste those screens into the full activity.

I think that the activity could definitely be designed to be modified easier, but anyways, here are the values you need to edit if you need to do more:

 ![ss1](https://canada1.discourse-cdn.com/flex031/uploads/desmos/original/2X/f/f9376dc55ceaa69146ba127dbe3cccc3196c5534.png)

 ![ss2](https://canada1.discourse-cdn.com/flex031/uploads/desmos/original/2X/8/8aadc99b07da84456491357894cd21692f9560ea.png)

 ![ss3](https://canada1.discourse-cdn.com/flex031/uploads/desmos/original/2X/9/9ca74218a3b9c1fe70cd627f705316183b800c1d.png)

Note: when you’re editing the graph, the lines won’t show as changed - you need to preview to see them. This also applies to when you’re editing the location of the labels. I just guess-and-checked my way to a decent location for them.