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Flauer [41]
3 years ago
15

The graph shows the number of hours per day spent on social media by a group of teenagers and the number of hours per day spent

exercising. A line of best fit for the data is shown.
A scatterplot is shown in the xy-plane. The horizontal axis is labeled as Social Media Hours Per Day and the vertical axis is labeled as Exercising Hours Per Day. The values on the horizontal axis range from 0 to 1.6 in increments of 0.2 and the values on the y-axis range from 0 to 2 in increments of 0.2. The line of best fit intersects the x-axis at a point just to the left of 1 decimal point 4 and y-axis at a point just below 1.1. Majority of the data points are concentrated between 0.3 and 0.6 on the horizontal axis and 0.6 and 0.9 on the vertical axis and two points are marked on the line.

Use the graph to determine how many hours a teenager would spend exercising in one day if they spent 0.25 hours on social media.
Use the graph to determine how many hours a teenager would spend exercising in one day if they spent 1.38 hours on social media.
Do you think the predictions from part (a) and part (b) are reliable? Explain your reasoning.​

Mathematics
1 answer:
umka21 [38]3 years ago
3 0

Answer:

0.9 hours

0

the nature of line is pure liner

Step-by-step explanation:

The attached graph is the drawn graph of given data

i) A teenager would spend exercising in one day if they spent 0.25 hours on social media.

0.9 hours

According to the graph if you locate the 0.25 hour on x-axis and draw perpendicular the will intersect the line on the value of y-axis is = 0.9 hours

ii) if they spent 1.38 hours on social media the corresponding value of exercising per day is approx  0

iii)   Yes it has the best fit value of corresponding values between two.  which is also reasonable in the all cases.  the nature of line is pure liner.

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