What is the slope of a line perpendicular to the line whose equation is 3x-9y=216. fully reduce your answer.

First, convert it to slope intercept form. That would make it: 



Then, change the slope by finding its negative reciprocal, since it is perpendicular

At a constant it will take one hour to travel 32 mi.at that speed it will take 1/2 hr to travel the remaining 16 mi.it will take 1+1/2 hr to travel the 48mi @ 32mph.so 1 hr = 60 min& 1/2 hr = 30 min1+1/2 hr = 90 min.there are 60s in each 90 × 60 = 3600 seconds.the real question seriously is he why are they driving so slow? ! lol.