Answer:
y= -2/5x
Step-by-step explanation:
At x=0 y is 4 and its decreasing
Use the slope equation thing
(y2-y1)/(x2-x1)
the coords for each point are (0,4) , (5,2)
Now fill it in
(2-4)/(5-0)
(-2)/(5)
-2/5x
