Answer:
The slope of the line would be

Explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form
or

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin
Let
x ----> the number of avocados
y ---> is the cost
In this problem we have a proportional relationship between the variables, x, and y,
The constant of proportionality k is equal to

so
The linear equation is

The slope of the line is equal to the constant of proportionality k or unit rate
therefore
The slope of the line would be
