Graphs are super useful for understanding wave properties like speed! Here’s how they can help:

1. Wave Equation: The basic formula we use is called the wave equation:
   $v = f \lambda$
   In this formula:

   • v means wave speed,
   • f stands for frequency,
   • λ represents wavelength.

2. Visual Representation: When you plot frequency against wavelength on a graph, you can easily see how changes in one affect the other.
   For example, if the frequency goes up, the wavelength goes down, while the speed stays the same.

3. Speed Analysis: You can also graph speed with time or distance. This shows how wave properties change in different situations.

Looking at these relationships on a graph makes it much easier to understand these ideas!