<p>I got A for the reflection.</p>
<p>It’s impossible for it to be point A. I realize the mistake you all made.</p>
<p>You all reflected it across the origin, or namely the intersection of the two graphs if you imagine it in a XY plane. The question asked you to reflect it “Across line l and then across line m”.</p>
<p>If you reflected first across line l directly, and then across line m directly, it was B.</p>
<p>If you reflected across the origin in this case, you would have first gotten D and then after another reflection you would have arrived at A.</p>
<p>However, it was across the “line”, not the origin. This was a simple negation of one component (x, y) to (-x,y) and then once more to (-x, -y), thus getting you the point directly opposite x-wise and y-wise from the starting point, which was B.</p>
<p>How to Reflect Across a Line: [Reflection</a> Across a Line](<a href=“http://www.analyzemath.com/Geometry/Reflection/Reflection.html]Reflection”>Reflection Across a Line)</p>
<p>i remember that one…i was stuck on it. and i was debating between a & b also…again, i totally forgot what i put…or if i put anythin at all…omg</p>
<p>my answer was the one directly above line L (the one that looked like the x-axis) in quadrant II.</p>
<p>is that the one? i think it was pt B</p>
<p>Use this Online Reflector Simulation to See how I got it:</p>
<p>[Reflection</a> of a Point Across a Line](<a href=“Department of Mathematics | Eberly College of Science”>Department of Mathematics | Eberly College of Science)</p>
<p>no, i thought it was definitely A. because you created an isoceles triangle if it were point A…</p>
<p>Try that simulation. Anyway you do it if you set the lines to what they were it becomes B. Why would the triangle need to be isocoles? The x and y coordinates weren’t neccesarily equal.</p>
<p>I did the simulation and got A.</p>
<p>How so? Did you orient the lines correctly? i’ve tried it several times and gotten B everytime. It doesn’t get close at all to A. Might depend what we are calling B and A though. What are the quadrants for your A and B?</p>
<p>fhg: bottom left corner was A.</p>
<p>Are you reflecting it across the correct lines? First the one going mostly horizontal and then the one going mostly vertical? I don’t see how it’s possible to get even close to A if you reflect the way as such.</p>
<p>I reflected green/red point line then blue point line</p>
<p>I see why, your lines are at too sharp angles. Those lines were at angles but they were very slight, not so large. Make them closer to 90 degrees, perhaps at 80 degrees and then you’ll see</p>
<p>Let me see a screenshot of yours.</p>
<p>It is absolutely point A. Reflecting across a line means basically that the line connecting the two points is perpendicular to the line. The figure was like this:</p>
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<p>Most definitely A.</p>
<p>Yeah, nice quick edit there Mr. Bojangles.</p>
<p>The only way it could’ve been B was if B was in the western quadrant between the two lines.</p>
<p>Mr. Bojangles is indeed confirmed … it’s A</p>
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<p>but wasn’t it reflected twice? the starting pt was in quad IV, then u reflect it over m, then over l…that’s in quad II. not the 3rd quadrant. now i’m just confused</p>
<p>Not according to the simulator, mrb</p>