Question

If the point ​(4,​1) is a point on the graph of​ f, then​ f( __ ​)​____.

Answer 1

(4,- 1)=(x,y) , so x=4 and y= -1
We know f(x) =y
Here we plug x = 4 and y = -1
That becomes f(4) = - 1
The answer is f (4) = - 1