For a function to be parallel to another function, it has to have the same slope but a negated y-intercept compared to the original function. In the case of number 29 first, you would have to get the function in terms of y. You need to add 5 over to 3x. You will end up with
5+3x-y=0. You then have to add y over to where zero is. You'll end up with 5+3x=y. This is your original function. To get the functions to be parallel you then negate the y-intercept (or your "b'). You will end up with -5+3x=y OR 3x-5=y.
