If x = –3 is the only x-intercept of the graph of a quadratic equation then thediscriminant of the equation must be 0As the quadratic equation when both its root coincide has a single x interceptso option C is correct hope it helps
Seven units long. The distance between 2 sides, in this example is 6, and -1. The distance between 6 and -1 is 7, so when you add units, you get 7 units.
