can you use wifi from phone plan for ipad1

Is this what you want to do?

iOS: Understanding Personal Hotspot

http://support.apple.com/kb/HT4517

Use Bluetooth to tether your iPhone, iPod touch, or iPad

http://www.macworld.com/article/1159258/bluetooth_tethering.html

How to Connect an iPad to an iPhone Via Bluetooth Tethering

http://techtips.salon.com/connect-ipad-iphone-via-bluetooth-tethering-25472.html

Get a Mi-Fi http://en.wikipedia.org/wiki/MiF

BTW - Your questions states an iPad 1, however, your profile shows iOS 7.0.2. The max iOS for an iPad 1 is iOS 5.1.1.

 Cheers, Tom 😉