Wave speed wavelength times frequency.
wave speed= frequency/wavelenth
wave speed= wave length * frequencyv=fa
Frequency = Wave speed / Wavelength.
Speed = Frequency * Wave length.
speed= frequency x wavelength
A. speed=wevelength/weve period
A wave equation is an equation that repeats y-values infinately creating a wave like pattern, a good example is the sine wave: http://en.wikipedia.org/wiki/Sine_wave
Wavespeed = frequency x wavelength
The last bit of your question confused me a little!? :P ... But I think you are referring to the 'The Wave Equation'. Wave Speed (v) in m/s = Frequency (f) in Hz * Wave Length (λ) in m This equation relates the speed of a wave to its frequency and wavelength
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Here is an equation that relates three quantities of any wave: speed = frequency x wavelength. However, I am pretty sure that usually, you'll have to somehow measure the speed of the wave, instead of calculating it. In other words, you would measure the speed and the frequency, and then use the formula to calculate the wavelength; or measure the speed and wavelength, and use the formula to calculate the frequency.
Speed(v) = wavelength(λ) x frequency(f).