Junior Cert Maths Samples

_________________________________________ juniorcertsolutions.com ________________________________________ 2016 Question 14 – Higher Paper 1 Solution (a) ( ) 2 10 50 130 h x x x = − + To draw the graph, use the table key on your calculator Or find f (0), f (1), f (2), etc x 0 1 2 3 4 5 h ( x ) 130 90 70 70 90 130 (b) (i) The height of the water at 12 noon ( 0 x = ): 130 h = cm (ii) The height of the water at the lowest point is approximately 68 cm (iii) Time to lowest point is 2.5 hours lowest point