Write in slope-intercept from an equation of the line that passes through the given points (-9,9), (-3,7)

y = (-1/3) x + 6

Step-by-step explanation:

y = mx + b    m: slope   b: y interception

m = (y-y') / (x-x') = (7-9) / (-3 - (-9)) = -2 /6 = - 1/3

for (-9,9)   b = y - mx  =9 - (-1/3) ×(-9) = 6

y = (-1/3) x + 6

check: for (-3,7)   7 = (-1/3) × (-3) +6

answer: 1inch=7days  

12inch=12*7=84days

step-by-step explanation:

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33