janelle3496
07.10.2019 •
Mathematics
Kiley gathered the data in the table. she found the approximate line of best fit to be y = 1.6x – 4.
what is the residual value when x = 3?
–1.8
–0.2
0.2
1.8
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Ответ:
Residual = -1 - (1.6 * 3-4)
residual = -1 - 0.8
residual = -1.8
Hope that helps! :)
Ответ:
–1.8
Step-by-step explanation:
A residual is the distance between an observed (actual) point and a predicted value. To make the prediction, we substitute 3 in for x in our line of best fit:
y = 1.6(3) - 4 = 4.8 - 4 = 0.8
To find the residual, we subtract the actual value and the predicted value:
-1-0.8 = -1.8
Ответ:
The center is (-2,3) and the radius is the square root of 183.