NOAA keeps track of not only deaths from lightning each year but also the circumstances under which those deaths occur. Listed below are the number of deaths from lightning other than when standing under a tree and the number that occurred when the victim was under a tree, for a random selection of years. Is there a linear relationship between the variables?

Find yʹ when x = 10.

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13 6 11 9 6 Death under a tree | 8 5 Other types of deaths 21 29 34 36 40 37 26