Jillian tracks her progress on her spelling test over a period

Why is it difficult to find length of the hypotenuse the same way the length of the legs can be found?

Ms. sutton recorded the word counts and scores of the top ten essays in a timed writing contest. the table shows her data. how does the word count of an essay relate to its score in the contest? word count tends to decrease as the score decreases. word count tends to increase as the score decreases. word count tends to remain constant as the score decreases. word count has no apparent relationship to the score of the essay.

Plzzz i beg u so much asap ! what is the slope of this line? enter your answer in the box.