The minimum point of the graph are (-1 , 1)
How to get the minimum point of a graph
To find the minimum point of a graph, particularly a function represented by a graph:
Identify the Function: Determine the equation or the nature of the function that the graph represents.
The minimum point may occur at the endpoints of a given interval. Check the function's behavior at these endpoints.
From the graph we have to check the points where the curve occurs at the bottom. When we trace the curve, we will see that it occurs at the point (-1 , 1)