Jordan plotted the graph below to show the relationship between the temperature of his city and the number of cups of hot chocolate he sold daily: a scatter plot is shown with the title jordans hot chocolate sales. the x axis is labeled high temperature and the y axis is labeled cups of hot chocolate sold. data points are located at 20 and 20, 30 and 18, 40 and 20, 35 and 15, 50 and 20, 45 and 20, 60 and 14, 65 and 18, 80 and 10, 70 and 8, 40 and 2. part a: in your own words, describe the relationship between the temperature of the city and the number of cups of hot chocolate sold. (2 points) part b: describe how you can make the line of best fit. write the approximate slope and y-intercept of the line of best fit. show your work, including the points that you use to calculate the slope and y-intercept. (3 points)

(a) The relationship between the temperature of the city and the number of cups of hot chocolate sold is negative. It means the sales of Hot Chocolate decreases as temperature increases.

(b)

Step-by-step explanation:

(a)

On a scatter plot the x axis is labeled High Temperature and the y axis is labeled Cups of Hot Chocolate Sold.

The given data points are (20,20), (30,18), (40,20), (35,15), (50,20), (45,20), (60,14), (65,18), (80,10), (70,8) and (40,2).

From the given data it is clear that the value of y decreases as x increases. The relationship between the temperature of the city and the number of cups of hot chocolate sold is negative.

It means the sales of Hot Chocolate decreases as temperature increases.

(b)

We need to find the approximate equation of best fit line.

If a line passes through two points and , then the equation of line is

Let as assume the line of best fit passes through the points (20,20) and (80,10). So, the equation of best fit line is

Add 20 on both sides.

Therefore, the equation of best fit line is .