Can you answer $5$ and $6$ and explain the steps??? I$$m so lost on how to do these. Thank you!!

$5.$ A wave is traveling in a rope. The diagram below represents a snapshot of the rope at a particular

Determine the number of wavelengths which is equal to the horizontal distance between points:

a$.\backslash ($ C $\backslash )$ and $\backslash ($ E $\backslash )$ on the rope

b$.\backslash ($ C $\backslash )$ and $\backslash ($ K $\backslash )$ on the rope

c$.$ A and $\backslash ($ J $\backslash )$ on the rope

d$.\backslash ($ B $\backslash )$ and $\backslash ($ F $\backslash )$ on the rope

e$.$ D and $\backslash ($ H $\backslash )$ on the rope

f$.$ E and I on the rope

$6.$ A wave with a frequency of $12\mathrm{.}3$ Hz is traveling from left to right across a rope as shown in the diagram on the right.

Positions A and B in the diagram are separated by a horizontal distance of $42\mathrm{.}8$ cm $.$ Positions $\backslash ($ C $\backslash )$ and $\backslash ($ D $\backslash )$ in the diagram are separated by a vertical distance of $12\mathrm{.}4$ cm $.$ Determine the amplitude, wavelength, period and speed of this wave.