Usually the "empty point" is on the right. Here it is on the left. This means the function has been rotated by 180 degree.
On question #6, I do not understand why parameter a is a negative number. To my knowledge when the white opening is on the left b is a negative number but when a goes from bottom left to top right, it is a positive number. Why am I wrong?
Any help would be greatly appreciated as I am studying for my math exam!
Thanks in advance!