Answer:
Slope = -2
Step-by-step explanation:
Since, slope = 
Rise = -(y-intercept)
Run = (x-intercept)
From the graph attached,
y - intercept = -(4) = -4
x - intercept = 2
Therefore, slope the line given in the graph attached will be,
Slope = 
= -2
Slope = -2
Good models are expected to reflect the number of books sold between zero and w numbers of weeks where w is defined.
<h3>What is a model?</h3>
A mathematical model is an equation that serves as a representation of a real life situation. It could be used for investigative or predictive purposes as required.
The following are all domains for which the average rate of change could be a good measure for the number of books sold:
- 0 ≤ w ≤ 2
- 0 ≤ w ≤ 7
- 0 ≤ w ≤ 10
Hence, good models are expected to reflect the number of books sold between zero and w numbers of weeks where w is defined.
Learn more about mathematical models: brainly.com/question/731147
