I need help with some geometry circle problems

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

The domain of a function can be represented by which one of the following options? o a. a set of output values o b. a set of f(x) values o c. a set of input values o d. a set of both input and output values

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.