Question

Estimate the line of best fit using two points on the line.

OA y=-8x+80
OB. y=-4x+80
OC. y= 8x+80
OD. y= 4x+80
80
(2.64)
(6, 32)
10 12 14 16 18 20

Answer 1

The abs were pretty bad and

Answer 2

A. y = -8x + 80

Step-by-step explanation:

Take two points from the best fit line (2, 64), (6, 32)

Find the slope:

`\sf slope: (y_2 - y_1)/(x_2- x_1) \ \ where \ (x_1 , \ y_1), ( x_2 , \ y_2) \ are \ points`

`\sf \rightarrow slope \ (m) : (32-64)/(6-2) = -8`

Find the equation:

`\sf y - y_1 =m(x - x_1 )`

`\sf \rightarrow y- 64 = -8(x - 2)`

`\sf \rightarrow y = -8x + 16 + 64`

`\sf \rightarrow y = -8x +80`