HO WILL EDUCATION Question 6 Consider the family of functions f. : R* - R, which is defined by S. (x) = "+ x-3, where a is a real number and a > 0. Part of the graph of fa is shown below. a. State the interval for which the graph of fa is strictly increasing, in terms of a. 2 marks y = + + N 4 - 3 X = yty - 3 T y ty - = * + 3