1. The diagram below shows the function Q(p) drawn to scale. 10 00 8 6 4 2 -4 -3 -2 -1 1 -2 -4 -N- 3 st บ 5 6 10 -6 -8 Using the diagram above, if the equation of the straight line for the interval 2 ≤ p ≤ 5 is Q(p) = 2p — α, use the knowledge of limits to determine the value(s) of a since the limit exists when p = 3 and 4. State one (1) reason to satisfy your solution.