Now if you look at this wrong, the student would be correct. The student made a common mistake that many make. The mistake they made was they put the <em>X</em> and <em>Y</em> backwards when making the point. All they have to do is make sure they put the <em>X</em> first then the <em>Y</em>. What they should have put is (-4,2). For any other point, you would replace <em>X</em> and <em>Y</em> in the points. (<em>X,Y</em>)
