Answer
Yes --- it is a direction proportion
Constant ---- 1/5
1/5y = x
We are given two variables x and y
[tex]\begin{gathered} \frac{1}{5}y\text{ = x} \\ if\text{ x is directly proportional to y} \\ x\text{ }\propto\text{ y} \\ x\text{ = ky} \\ \text{Where k is the constant} \\ \text{Therefore, k = }\frac{1}{5} \\ \end{gathered}[/tex]Theerefore, the function is a direct proportion and the constant is 1/5
