Questions: State whether the following rule defines y as a function of x or not. x 80 15 0 -1 0 15 80 y 9 4 1 0 -1 -4 -9 Is y a function of x? A. No, because at least one y-value of the given rule corresponds to more than one x-value. B. No, because at least one x-value of the given rule corresponds to more than one y-value. C. Yes, because each x-value of the given rule corresponds to exactly one y-value. D. Yes, because each y-value of the given rule corresponds to exactly one x-value.

State whether the following rule defines y as a function of x or not. x 80 15 0 -1 0 15 80 y 9 4 1 0 -1 -4 -9 Is y a function of x? A. No, because at least one y-value of the given rule corresponds to more than one x-value. B. No, because at least one x-value of the given rule corresponds to more than one y-value. C. Yes, because each x-value of the given rule corresponds to exactly one y-value. D. Yes, because each y-value of the given rule corresponds to exactly one x-value.