Will this Macbook be able to build Unity games and Xamarin apps for the iOS?

Hi. I've asked a question before and gotten help. I would appreciate advice on the current matter, too.

I am thinking of purchasing a Macbook to build Unity games and Xamarin apps for the iOS. Could you please advise whether this laptop will work?

https://goo.gl/iWbL5t

- Apple Macbook 13"

- A1342(Late 09)C2D

- Processor Speed: 2.26GHz

- Memory: 4GB RAM

- Hard Disk: 320GB

- macOS: (recently upgraded to) 10.13, High Sierra

- Purchased in 2009

- $135.64 (including shipping)

I was previously referred to the 15% - 25% off Refurbished link on the Apple website, but I still do not want to shell out $800+, just yet. The reason is that I will be doing all the development on the powerful Windows laptop, and will only be using the Macbook to fire the build.

Thanks.