Which of the following describes the graph of y=sqr-4x-36 compared to the parent square root function? a. stretched by a factor of 2, reflected over the x-axis, and translated 9 units right b. stretched by a factor of 2, reflected over the x-axis, and translated 9 units left c. stretched by a factor of 2, reflected over the y-axis, and translated 9 units right d. stretched by a factor of 2, reflected over the y-axis, and translated 9 units left