Answer:
Because there is only one out put for each domain this mapping diagram is a function.
Step-by-step explanation:
Two sets are involved. There is a directional property, the relation is defined from one set called the domain on to another set called the codomain. A function is a relation that has exactly one output for each input in the domain.
60 mins I think because 1 hour equals 60 mins
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.