Is this set of coordinates describing a function? Explain.

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Ze trinomial x2 + bx – c has factors of (x + m)(x – n), where m, n, and b are positive. what is ze relationship between the values of m and n? explain how you got ze answer

Given abc find the values of x and y. in your final answer, include all of your calculations.