URGENT PLEASE HELP FAST!! Solve for x

Part a: select all of the ordered pairs that are located on the graph of the equation. part b: does the graph of the equation represent a function? select all correct answers for part a and one answer for part b.

If x=-3 is the only x-intercept of the graph of a quadratic equation, which statement best discribes the discriminant of the equation?

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)