Help me with 47-50 based on the graph

Answer:
-1
3
[-4,-2] and [2,3] are increasing
[-2,-1] and [3,5] are decreasing
(-infinity,-4] and [-1,2] and [5,infinity)
Step-by-step explanation:
look at the graph
for 47. it's asking when the input (aka the X) is equal to 1, what is the output (aka the Y). so just go to the graph where X=1 and read the Y