Answer:
The slope is

Explanation:
Let
x ---> the number of tickets
y ---> the total cost
we know that
The equation of a line in slope intercept form is equal to

where
m is the slope
b is the y-intercept
In this problem we have that
The slope or unit rate is the cost of one ticket

The y-intercept is the same that the handling fee charge

so
The linear equation that represent this situation is

therefore
The slope is
