The graphs of eight functions are sketched below. Which graph could represent a) y = 5 - 3x b) y = 12/x c) y = 2x3 (Marks available: 3) Answer Answer outline and marking scheme for question: 1 a) 8 b) 2 c) 6 (Marks available: 3) The graph shows the speed of a car in kilometres per hour (km/h). a) What is the speed of the car after 10 seconds? (1 mark) b) After 30 seconds, the car travels at a steady speed of 60 km/h for 1 minute. Continue the graph by drawing a line AB to show this. (1 mark) c) Draw a straight line from B to the point C (110,0). (1 mark) d) What does the graph between B and C tell you about what the car is doing? (1 mark) (Marks available: 4) Answer Answer outline and marking scheme for question: 2 a) 20km/h b) Horizontal straight line, ending at (90,60). c) Straight line from (90,60) to (110,0) d) 'Slowing down' or 'stopping' (Marks available: 4)