Answer:
D
Step-by-step explanation:
We need to understand the meaning of slope. The slope means the rate of change of y with every unit change of x.
In our case, it will be rate of change of sales increase (%) with respect to unit change of discount(%).
The formula for slope is the change in y divided by change in x.
From the 2 points given, we can say that slope is:
[tex]\frac{62-32}{20-10}=\frac{30}{10}=\frac{3}{1}[/tex]
This means "as discount increases 1%, sales increase by 3%". Option D is right.
