the ratio of feet to yards is:
[tex]\frac{3feet}{1yard}[/tex]
Now, the proportion to find the equivalent yards for 9 feet is:
[tex]\frac{3feet}{1yard}=\frac{9feet}{x\text{ yards}}[/tex]
Let's solve for x:
[tex]\begin{gathered} x=\frac{9ft\times1yard}{3ft} \\ x=3\text{yards} \end{gathered}[/tex]
Therefore, 9 feet=3 yards.
