how to plot graphs

Plot the probability mass function (PMF) and the cumulative distribution function (CDF) of 3 random variables each following (1) binomial distribution [p, n], (2) a geometric distribution [p], and (3) Poisson distribution [𝜆]. You have to consider two sets of parameters per distribution which can be chosen arbitrarily.

[Steven Lord]

This sounds like a homework assignment. If it is, show us the code you've written to try to solve the problem and ask a specific question about where you're having difficulty and we may be able to provide some guidance.

If you aren't sure where to start because you're not familiar with how to write MATLAB code, I suggest you start with the free MATLAB Onramp tutorial to quickly learn the essentials of MATLAB.

If you aren't sure where to start because you're not familiar with the mathematics you'll need to solve the problem, I recommend asking your professor and/or teaching assistant for help.