A State Park charges $5 per car plus $1 per person as an admission fee. The total charged for a car with x people is f(x) = x + 5. How will the graph of this function change if the per car charge is changed to $8 per car?

The line will shift vertically down by $3.
The line will shift vertically up by $3.
The line will shift vertically up by $8.
The line will shift vertically down by $8.

Question

A State Park charges $5 per car plus $1 per person as an admission fee. The total charged for a car with x people is f(x) = x + 5. How will the graph of this function change if the per car charge is changed to $8 per car?

The line will shift vertically down by $3. 
The line will shift vertically up by $3. 
The line will shift vertically up by $8. 
The line will shift vertically down by $8.

tkhunny · Answer

We are increasing the charge by $3.  Why would it go down?

anonymous · Answer

Yes we are increasing the charge by $3.