Question

X -5 -3 4 1 -1 -2 0 2 3 -4

y -10 -8 9 1 -2 -6 -1 3 6 -8

For the data in the table, find the line of best fit and use it to predict the value of y when x = -3.8.

A) -8.53
B) -7.42
C) -0.01
D) 4.20

Answer 1

The answer is actually A) -8.53

Explanation:

The line of best fit has equation y = 2.1x - 0.55, so plugging in x = -3.8 yields -8.53 for y. I just did my USATestprep and this was the answer.