Exercise

# Adding A Line

We can use `abline()`

to add any line we like, as long as the first argument is the intercept and the second is the slope. Let's try it out! `money`

and `prosocial`

are still saved in your console.

Instructions

**100 XP**

- Add a line of code to show the mean value of the dependent variable
- Remember that the mean line is constant accross all values of the independent variable, so there is no slope!