a system of two equations contains one quadratic equation and one linear equation. the quadratic system of the equation is y=x^2+5x-9. the solutions of the system are (3,15) and (-1,-13). what is the linear equation in the system?
Help if you don't mind!
suppose the line is y=mx+b when x=3, y=15, so 15=3m+b when x=-1, y=-13, so -13=-m+b solve the system of these two equation, you get m=7, b=-6 so the linear equation is y=7x-6
