Please help due in 15 min

Can someone me with this problem . show your work .

Thelime contains the point(-3,0) and parallel x-3y=3( show all work)

One cell phone plan charges $20 per month plus $0.15 per minute used. a second cell phone plan charges $35 per month plus $0.10 per minute used. write and solve an equation to find the number of minutes you must talk to have the same cost for both calling plans.