Which graph represents the same relation as the table below? x f(x) –2 5 0 1 1 –1 2 –3

It would be hard to find an European city that has a worse reputation than Bartovia’s, with crime, rubbish, graffiti and dereliction featuring in its every description over the last 60 years.

With unemployment running at 11%, the city government essentially bankrupt, and a population actually falling as young people leave in droves, there are few bright spots in Bartovia’s future.

One of the few, however, is a new venture run by Sergio Leone, a nano-chemist who has returned to the city of his birth to try to make the impossible a reality.