In my option this is a hard two part question that's why I have offered a lot of points. Also you can see my hand written answer for question 10 when it was asking for the slope but in question 11 they are asking for the y intercept as you can see and read in the picture.

Acable company claims that the average household pays $78 a month for a basic cable plan, but it could differ by as much as $20. write an absolute value inequality to determine the range of basic cable plan costs with this cable company. a. |x − 78| ≥ 20 b. |x − 20| ≥ 78 c. |x − 20| ≤ 78 d. |x − 78| ≤ 20