SOLUTION: Why can we not use point-slope form or slope-intercept form to write the equation of a vertical line?
Thank you in advance for your help
Daniel H. Jack
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Points-lines-and-rays
-> SOLUTION: Why can we not use point-slope form or slope-intercept form to write the equation of a vertical line?
Thank you in advance for your help
Daniel H. Jack
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Question 1014774: Why can we not use point-slope form or slope-intercept form to write the equation of a vertical line?
Thank you in advance for your help
Daniel H. Jack Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Why can we not use point-slope form or slope-intercept form to write the equation of a vertical line?
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slope = (change in y)/(change in x)
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But there is no change in x if the line is verical; so the slope requires you divide by 0.
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But division by zero is "undefined".
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So there is no slope to use in pt-slope or slope-int.
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Cheers,
Stan H.
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