Answer:
The linear function is
. The graph of function is given below.
Step-by-step explanation:
The slope intercept form of a linear function is

Where, m is slope and b is y-intercept.
Since the slope is -1 and the y-intercept is 3, therefore the linear function is,

put y=0, to find x-intercept.


Therefore the line intersect the y-axis at y=3, x-intercept is x=3 and the as the value of x increases the value of y decreases.
The graph of the linear function
is given below.