The slope for the relationship between the price and the quantity of ice cream sold is -$0.067 per unit
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Linear equation</h3>
A linear equation is in the form:
y = mx + b
where y, x are variables, m is the rate of change and b is the y intercept.
Let y represent the price (vertical axis) and x represent the quantity.
The slope = ($3 - $4)/(35 - 20) = -$0.067 per unit
The slope for the relationship between the price and the quantity of ice cream sold is -$0.067 per unit
Find out more on linear equation at: brainly.com/question/14323743
