What dose absolute value mean

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

What is the domain of the given function? {(3,-2), (6, 1), (-1, 4), (5,9), (-4, 0); o {x | x= -4,-1, 3, 5, 6} o {yl y = -2,0, 1,4,9} o {x|x = -4,-2, -1,0, 1, 3, 4, 5, 6, 9} o y y = 4,-2, -1, 0, 1, 3, 4, 5, 6, 9}

What is the slope of the line? a. -5/2 b.2/5 c. 5/2 d.7/2