Answer:
Option C is correct.
Step-by-step explanation:
We are given a graph of piece-wise function which break at x=1
We need to choose correct option for graph.
Function is break at x=1.
We will get two function
For x≤1 and x>1
As we can see x≤1, graph is linear and x>1 graph is parabolic.
Equation of linear graph, x≤1
Take two point of graph (0,6) and (-6,0)
Equation of line:


f(x)=x+6 , x≤1
Equation of parabolic graph, x>1
Piece-wise function

Please see the attached figure.
Hence, The option C is correct.