Can you help me plz?

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?

Identify this conic section. x2 - y2 = 16 o line circle ellipse parabola hyperbola