Answer:
<h2>In the attachment.</h2>
Step-by-step explanation:
The slope-intercept form of an equation of a line:

m - slope
b - y-intercept → (0, b)
We have m = -1 and b = 3. Substitute:

The graph is a straight line. Therefore we need only two points to plotting the graph.
One we have, the y-intercept (0, 3). Calculate other point.
Put any value of x to the equation of a line and calculate the value of y:
For x = 3:
