Question

What is the equation of the line of best fit that Pat drew?

OA.
y = -51 + 3
OB.
y = -5.7 + 7
O C.
Y =
* + 3
-Br
y = -x + 7
OD.

Answer 1

B) y = -5x + 7

Explanation:

Pick 2 points on the line: (10, 5) and (15, 4)

slope = change in y ÷ change in x = (15 - 10) ÷ (4 - 5) = -5

from inspection, the y-intercept is (0, 7)

Therefore, using slope-intercept formula: y = mx + b

(where m is the slope and b is the y-intercept)

y = -5x + 7