I need help with this please

Question 11 5 pts 9 1 0 Details 11 -10 -9 -8 -7 6 -5 -4 -3 -2\\ 2 5 6 7 8 9 The curve above is the graph of a sinusoidal function. It goes through the points ( - 9, - 4) and (1, - 4) . Find a sinusoidal function that matches the given graph. If needed, you can enter 7=3. 1416... as 'pi' in your answer, otherwise use at least 3 decimal digits. f(z) = Question Help: Message instructor