Answer:
[tex]y=-x+3[/tex]
Step-by-step explanation:
we know that
The equation of a line in slope -intercept form is equal to
[tex]y=mx+b[/tex]
where
m is the slope
b is the y-intercept
In this problem we have
[tex]m=-1\\b=3[/tex]
substitute
[tex]y=-x+3[/tex]