Mathematics, 22.10.2019 04:10 ayoismeisalex

Naomi plotted the graph below to show the relationship between the temperature of her city and the number of popsicles she sold daily:

part a: in your own words, describe the relationship between the temperature of the city and the number of popsicles 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)

Naomi plotted the graph below to show the relationship between the temperature of her city and the n

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Answer from: xojade

Part A: The given scatter plot represent the positive relation between temperature and sales of popsicles.

Part B:The equation of best fit line is . Slope of the line is 1/5 and y-intercept is 2.

Step-by-step explanation:

Part A:

From the given graph it is clear that x-axis represents the temperature in Fahrenheit and y-axis represents the number of popsicles she sold daily.

From the given scatter plot it is clear that the number of popsicles she sold daily increases as the temperature increases.

Therefore the given scatter plot represent the positive relation between temperature and sales of popsicles.

Part B:

The given scatter plot represent the positive relation between two variables and it represents strong positive correlation because the data points lie about a straight line.

Let the two points on the best fir line are (40,10) and (90,20).

The equation of best fit line is

Add 10 on both the sides.

Therefore, the equation of best fit line is . Slope of the line is 1/5 and y-intercept is 2.

Answer from: amc9639

Part A: There is one outlier, but this graph shows a positive correlation. In other words, the number of popsicles increases as the temperature increases.

Part B: For this part, we can make a straight line that goes through the correlation by looking at the points and seeing what will work. In this case, we will use the points (40, 10) and (50, 12) to find the slope of the line. In case you don't know, the formula for finding slope is y2 - y1/x2 - x1. That makes the formula 12 - 10/ 50 - 40. Solving this will get you 2/10 or 1/5 in simplest form. 1/5 is the slope of the line. We can find a y-intercept by using one of the points. Let's use (40, 10). The equation becomes 10 = 1/5(40) + b. 1/5 * 40 is 8. Subtract 8 from both sides to isolate the b. 10 - 8 is 2. 2 = b. The y-intercept is 2. If you draw the line, you can see that the y-intercept is 2, and even without drawing it, you can visualize that the y-intercept would be 2.

Answer from: Quest

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Answer from: Quest

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.

Which best describes how to find the length of an arc in a circle?

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