Answer:
The slope in this situation can be determined by creating a linear equation that relates the revenue earned from walking dogs to the number of dogs walked. If we assume that the number of dogs walked is represented by the variable x, then the revenue earned (in dollars) can be represented by the equation:
y = 3x - 5
where y is the revenue earned and -5 represents the cost of buying treats.
The slope of this equation is 3, which represents the rate of change in revenue for each additional dog walked. In other words, for each additional dog walked, the revenue earned increases by $3.