A weight loss program advertises a person can attain an average weight loss of 4 pounds per week.

(a) What is the average rate of change (in pounds per week) for this weight loss program?

(b) If a person who weighs 180 pounds follows the weight loss program, what is the person's weight (in pounds) after 5 weeks?

(a) -4 pounds/week

(b) 160 pounds

Step-by-step explanation:

Rate of Change

(a) We know the average weight loss is 4 pounds per week. Since the average weight is decreasing, the rate of change is negative.

The average rate of change is -4 punds/week

(b) If a person who weighs 180 pounds before starting the weight loss program, he will lose 4 pounds per week times 5 weeks=20 pounds.

Thus, the person's weight after 5 weeks will be 180 - 20 = 160 pounds

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )