Hanks Graph: Straight line that does NOT go through the origin
Because he pays the same amount every month but he started with a cost of 2,000. That puts him off the origin
Lynn's graph:
Straight line that DOES pass through the origin
She pays the same every month, but she also started by paying nothing, meaning she does start at the origin.
Third question:
Just Lynn. Lynn pays the same $275 a month, but Hank started with $2,200.