what equation represents the graphed function

Answer: [tex] y=\dfrac{-1}{3}x+3[/tex]
Step-by-step explanation:
The equation of ab line that passes through two points (a,b) and (c,d) is given by :-
[tex](y-b)=\dfrac{d-c}{b-a}(x-a)[/tex]
From the given picture , the line is passing through points (0,3) and (3,2).
Then, the equation of the line will be :-
[tex](y-3)=\dfrac{2-3}{3-0}(x-0)[/tex]
[tex]\Rightarrow y-3=\dfrac{-1}{3}x[/tex]
[tex]\Rightarrow y=\dfrac{-1}{3}x+3[/tex]
Hence, the required equation of the line that represents the graphed function : [tex] y=\dfrac{-1}{3}x+3[/tex]