With a slope intercept formula how do you find that same equation but make it pass through a certain point for example y=2x-3 passes through (1,2) how do i find out the equation

Um when doing this, there is no defined b term yet--b is unknown still. So it would be y= 2x+b. Then you have to plug (1,2) in as x and y, and solve for b. Once you get the answer for b, you put it into your equation and have your answer. But saying you want y=2x-3 to pass through (1,2) is impossible unless it already passes through it since all of the terms are already definite and put into place so they can't be changed.

Suredude why not right