hi Everyone iam having a Problem and dont know how to work with it

iam Trying to plot a scatter plot where the same Value of X will have multiple values of Y

say Y = [[1,2,3],[4,5,6],[7,8,9]]

and x = [1,2,3]

i want to plot it so that for x = 1 the y values are 1 2 and 3

thanks if needed i can add my code later