Problem
The table shows the side lengths and perimeters of four squares. \begin{tabular}{|c|c|} \hline Side Length $(x)$ & Perimeter $(y)$ \\ \hline 4.5 & 18 \\ \hline 8.5 & 34 \\ \hline 10.25 & 41 \\ \hline 13.75 & 55 \\ \hline \end{tabular} Which equation represents the relationship between the side length, $x$, and the perimeter, $y$ ? $y=\frac{1}{4} x$ $y=4 x$ $y=x+13.5$ $y=x-13.5$ Mark this and return
Solution
Step 1 ：From the table, we can see that the perimeter of each square is four times its side length.
Step 2 ：This is because the perimeter of a square is calculated by multiplying the side length by 4.
Step 3 ：So, the relationship between the side length, $x$, and the perimeter, $y$, is $y=4x$.
Step 4 ：Thus, the equation that represents the relationship between the side length, $x$, and the perimeter, $y$, is \(\boxed{y=4x}\).
