(-5,11) and (-5,-2) The thing is, I get it and it divides by zero. Am I doing something wrong?
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Nope! This one is a trick question! We have a line that passes through (-5,11) and (-5,2). What is the same about those two points?
The x's are the same!
Do you see it now? OK, now here's the hint: All points lying on the line that passes through these two points have the same x.
Oh! ...oh, okay. So hold on: is it y = 1x + 0? or... ...
No! "All x's are -5", express this mathematically!
All x's are -5? So. x = -5?
Originally Posted by mankvill All x's are -5? So. x = -5? Absolutely! $\displaystyle x=-5$ represents all points that have the same x, -5. So this is the line we were looking for.
Originally Posted by wingless Absolutely! $\displaystyle x=-5$ represents all points that have the same x, -5. So this is the line we were looking for. ...really? ...huh. So the answer to the question is just x = 5? ...very strange. I'll keep that in mind in the future! Thanks a ton!
Originally Posted by mankvill ...really? ...huh. So the answer to the question is just x = 5? ...very strange. I'll keep that in mind in the future! Thanks a ton! Also consider what happens when $\displaystyle y=3$. And try to graph it. You're welcome
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