which equation best represents a trend line for the scatter plot?

y=−67x+627
y=67x+507
y=−76x+556
y=76x+416

y = -7/6 x + 55/6

Step-by-step explanation:

(1,8) and (7,1)

slope =(8-1)/(1-7) = 7/-6 = -7/6

Equation

y - 1 = -7/6(x - 7)

y - 1 = -7/6 x + 49/6

y = -7/6 x + 49/6 + 6/6

y = -7/6 x + 55/6

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.