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I have a laboratory experiment on Young's double slit interference. My instructor asked us how increasing...

I have a laboratory experiment on Young's double slit interference. My instructor asked us how increasing the distance effects and pattern of interference, and how decreasing slit width affects the pattern of interference. I know that if we increase the separation between the slits, we have more interference fringes produced.

What I do not know is how decreasing the slit width affects how many interference fringes are produced? I researched the topic and I', getting conflicting answers as some say it's an inverse relationship and others say it is not related. I know if we decrease the slit width, the diffraction pattern gets wider. Does that have an effect on interference fringes and if so, how?

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