Answer:
[tex]-\frac{1}{5} x+b[/tex] (b can equal any number- you can use 3)
Step-by-step explanation:
To find the slope, you take mx (in this case 5x), get the number by itself, flip the sign, then get the reciprocal.
5 -> -5 -> [tex]-\frac{1}{5}[/tex]
