---
id: 5d8a4cfbe6b6180ed9a1ca10
title: Step 51
challengeType: 0
dashedName: step-51
---
# --description--
Set the `x` values for `tumblrLine` using another "d function". Use your `xScale` and the `d.year` to calculate their values just like you did for the Twitter line.
# --hints--
test-text
```js
assert(
/const tumblrLine = d3\.line\(\)\s*\.x\s*\(\s*d\s*=>\s*xScale\s*\(\s*d\.year\s*\)\s*\)/g.test(
code
)
);
```
# --seed--
## --before-user-code--
```html
D3 Dashboard
```
## --seed-contents--
```html
```
# --solutions--
```html
```