with increasing the value of x , value of expression
decreases continuously .
Explanation:
Here we have , an expression as 100-x or ,
. We need to tell what happens to the value of expression when value of x increases :
According to question ,Given expression is in form of f(x) = mx +c ,value of slope & y-intercept is :

Now , from the graph attached we can see that
For x<100 :
For x=100 :

For x>100 :

Hence , with increasing the value of x , value of expression
decreases continuously .