I'm just wondering if this ever happens/happened to anyone else. Students and parents alike may answer this one.
I was doing an SAT practice math test last night as I had nothing else to do at the time and knew it would be better to do it then than to wait until this morning (monday) when I'd be tired and have interuptions and probably not do as well. I came to a particular question about perpendicular sloping lines and choosing an equation that fits for a line (not shown) perpendicular to the line given. I couldn't remember a formula for this, but as i looked at the xy plane I could clearly picture the imaginary line i had to find the equation for. My brain must have done something with that information because I just KNEW what the answer was then. I looked at the choices and, while I couldn't explain what was going through my brain at the time, I KNEW the equation HAD to be m = -1/2x.
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