What is the answer to the question? Need help asap

How do you answer this question? (step by step)

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

Which points are solutions to the linear inequality y < 0.5x + 2? check all that apply. (–3, –2) (–2, 1) (–1, –2) (–1, 2) (1, –2) (1, 2)