ReasonThe graph of y=−1__2x+ 2 is negative over the interval (4, ∞) and positive over the interval (−∞, 4). What happens on the graph when x= 4? Explain.

3cm and 6 and 9 cm that a possibility of that question

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.