The cost of making a ceramic picture frame at a paint-your-own pottery store is $12 plus
$5 per hour while you paint. The total cost for the frame that you spent x hours
painting is fx=5x+12.

a. How will the graph of this function change if
the cost of the frame is raised to $15?
b. How will the graph of this function change if
the hourly charge is lowered to $4?