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vagabundo [1.1K]
3 years ago
13

HELP PLEASE NEED TO PASS!!!!!!!!!Rob is investigating the effects of font size on the number of words that fit on a page. He cha

nges the font size on an essay and records the number of words on one page of the essay.
The table shows his data.Which equation represents the approximate line of best fit for data, where x represents font size and y represents the number of words on one page?

y = –55x + 407
y = –41x + 814
y = –38x + 922
y = –26x + 723

Mathematics
2 answers:
zepelin [54]3 years ago
8 0

Using the given data you can build the linear regression (described by linear function y=ax+b) by hand or you can use math calculator to do this. In attached diagram you can see that

a=-26.059\approx -26

and

b=722.633\approx 723.

Then the equation of linear function is

y = -26x + 723.

Answer: correct choice is D.

Gnoma [55]3 years ago
3 0

Answer:

D. <em><u>y = –26x + 723</u></em>

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