The Chief Minister of Delhi launched the 'Switch Delhi', an electric vehicle mass awareness campaign in the National Capital. The government has also issued tenders for setting up 100 charging stations across the city. Each station will have 5 charging points. For demo charging station is set up along a straight line and has charging points at A(7.0) B(0.7) C(3,4) D(7.7) and E(x, y) 3 Also the distance between C and E is 10 units and D is the midpoint of CE (a) What is the distance DE?(b) What is the value of x + y?(c) Points C,D,E are collinear or not ?