Page No 375:
Question 4:
Sketch the graph of 
and evaluate
The given equation is
The corresponding values of x and y are given in the following table.
x | – 6 | – 5 | – 4 | – 3 | – 2 | – 1 | 0 |
y | 3 | 2 | 1 | 0 | 1 | 2 | 3 |
On plotting these points, we obtain the graph of as follows.
It is known that, 
