Given:
Graph of function.
Sol:
Non-linear of any function is defined as a graph which not a straight line and a given graph is not a straight line so it's a non-linear graph.
Decreasing function: If the value of "x" increases then the value of y decreases so it's a decreasing function.
So the -2 to 1 function is decreasing.
Increasing Function: if "x" is increasing the value of "y" is also increase
