Equation for undefined slope
Date: 10/24/1999 at 18:43:21 From: Andy Subject: Equation for undefined slope How do you write an equation for a vertical line with an undefined slope? Example: vertical line with an x-intercept of 8 Thank you for your time. Sincerely, Andy
Date: 10/24/1999 at 22:49:40 From: Doctor Tom Subject: Re: Equation for undefined slope How about x = 8 To avoid the problems of lines that have infinite slopes, don't use the equation y = mx + b; instead use the equation ax + by + c = 0 All lines (even with infinite slopes) can be represented using that equation. - Doctor Tom, The Math Forum http://mathforum.org/dr.math/
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