<p>when you have (-x+3)/(x-3) it can be simplified to -1 right?</p>
<p>right</p>
<p>if y = (-x+3)/(x-3) and x =/= 3 , y = -1</p>
<p>no cause the + and the - keep the -x&3 and the x&-3together. That’s if you’re simplifying though</p>
<p>Well you can simplify it, but you have to remember that the domain does not include x = 3</p>
<p>who’s right here? couldbeheaven or Giggi?</p>
<p>Well mine is is for when you factor crap and you’re simplifying the answer. Math really isn’t my subject though so just ignore me lol</p>
<p>I guess it depends on what you’re trying to do. What’s the context?</p>
<p>Yes it can. If you factored out a -1 from the top, you’d get -1(x-3)/(x-3) which reduces to -1. Just remember the domain: x != 3.</p>
<p>Right. It’s -1 as long as x is not 3.</p>
<p>The above posters are correct. Your expression simplifies to to -1 where x =/= 3 (however, x =/= 3 is a restriction that applied to the original expression as well, not something that came about from simplifying).</p>