![y=6x^4](https://img.qammunity.org/2023/formulas/mathematics/high-school/sq1cphyny0d5p05gf3zijmh9p3pto3hf3q.png)
1) Considering that y varies directly as the fourth power of x. So we can write:
![y=kx^4](https://img.qammunity.org/2023/formulas/mathematics/high-school/t7afepyxdmavefqms840mm5cenmvb38r92.png)
2) But notice, we were told when x=1, y=6 so we can write out:
![\begin{gathered} y=kx^4^{} \\ 6=k(1)^4 \\ k=6 \\ \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/high-school/6azwxgm7otqb583vm3jvbk4vcspprj8vab.png)
Note that now, we know the constant "k" of proportionality. Then we can write the following equation:
![y=6x^4](https://img.qammunity.org/2023/formulas/mathematics/high-school/sq1cphyny0d5p05gf3zijmh9p3pto3hf3q.png)
Thus, this is the answer.