A graph of wavelength vs. 1/frequency should be a straight line. What are it's slope and y-intercept?

Question

I'm not given any graphs or numbers, just this question. And I know that Velocity = frequency x wavelength

And that slope is found by rise/run and m= y2-y1/x2-x1 obviously.

So what are they looking for in an answer for the slope and y-intercept?

Thanks

Answer 1

L = V(1/F) + 0

Slope = V. V is a constant.

y-intercept = 0