The wave formula is shown below. Check all boxes that are correct.

1) Wave speed is inversely related to the product of wavelength and frequency.
2) Wavelength has an inverse relationship with wave frequency when wave speed remains constant.
3) Wave speed is directly related to the product of wavelength and frequency.
4) Frequency has a direct relationship to wavelength when speed remains constant.
5) Wavelength and frequency are not related to wave speed.

3) Wave speed is directly related to the product of wavelength and frequency.

4) Frequency has a direct relationship to wavelength when speed remains constant

Explanation:

V is the velocity (wave speed)

f is the frequency

the symbol next to the frequency is the wavelength

Velocity is proportional because the wavelength and frequency are multiplying.

It would be inversely proportional when the velocity is the dividend of the wavelength and frequency.

On the second statement, frequency (and wavelength) are directly related/proportional to the speed of the wave.

answer; /// the above statement is (true);