---
id: 5d8a4cfbe6b6180ed9a1c9f5
title: Part 24
challengeType: 0
---
## Description
Create a new `const` named `xScale`. Use it to create another linear scale like you did for the y-scale. This will be the horizontal or "x" axis.
## Instructions
## Tests
```yml
tests:
- text: test-text
testString: assert(typeof(xScale) === "function" && /xScale\s*=\s*d3\.scaleLinear/.test(code));
```
## Challenge Seed
```html
```
### Before Test
## Solution