⇒ This equation can be written in the form of y = mx + c where m is the slope, c is the y-intercept and x and y are x and y coordinates respectively of the point where the the line passes.
2x+y=3
y = -2x + 3.
If the line passes through the origin (0,0), then c = 0. This is not the case in our eqation.
Again if the question passes through the origin, by substituting the point (0,0) in the question it would satify it.