The given function transforms the parent function, y = abs (x), in the following ways
a. Reflects the function across the x axis [ due to the negative sign]
b. Vertically "compresses" the function by (1/2)
c. Shifts this end result up by 3 units
"Vertex" = ( 0,3)
Domain = ( -infinity, +infinity)
Range = ( -infinity ....1,2,3] set builder notation
Range = ( -infinity, 3 ] interval notation
Zeroes x = -6 , x = -6
Y intercept = occurs at the vertex ⇒ (0,3)
Intervals of increase = (- infinity, 0)
Intervals of decrease = (0, infinity )
The end behavior in both directions is toward -infinity
Here's the parent graph and the given graph : https://www.desmos.com/calculator/tb3pt4duib