Write an equations in slope-intercept form for the line of fit and interpret the slope and y-intercept

What is the nth term rule of the linear sequence below? 27 , 25 , 23 , 21 , 19 , . .

Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?

Shane can shovel the driveway in 4 hours, but if his sister it would take 2 hours. how long would it take taylor to shovel the driveway alone