(01.05 MC)The temperature of a city changed by a total of −20 degrees Celsius over a 4-week period. The temperature changed by the same amount each week. Part A: Write an expression to show the average change in the temperature of the city each week.

Part B: Simplify the expression and explain, using words, what your answer means.

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

step-by-step explanation:

se a cavasery6

step-by-step explanation:

a'(12.5,11.25)

slope=(y1-y2)/(x1-x2)