Welcome to Westonci.ca, where curiosity meets expertise. Ask any question and receive fast, accurate answers from our knowledgeable community. Connect with a community of professionals ready to help you find accurate solutions to your questions quickly and efficiently. Our platform offers a seamless experience for finding reliable answers from a network of knowledgeable professionals.

Which of the following key characteristics is NOT true of a quadratic function?
A: Range is all real numbers.
B: Shape is a parabola.
C: Rate of Change is not constant.
D: It has only one vertex.