I'll start working on the rate... 15.25- 8.5 =6.75 6.75/ 3= 2.25 <(This is the rate) 8.5- 2.25= 6.25 6.25- 2.25= 4 <(Now I work my way to the y-intercept) The y-intercept is 4 and the rate, which I found along the way, is 2.25.
recall that when it comes to absolute value expressions, once we remove the bars, it turns always to positive, so | -5 |, the bars go poof, and tada!! 5.