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Mathematics 21 Online
OpenStudy (anonymous):

Find the slope of the line passing through (-8, 10) and (-8, -7)

OpenStudy (saifoo.khan):

What'd you got?

OpenStudy (anonymous):

-17/0

OpenStudy (anonymous):

its (y2-y1)/(x2-x1)

OpenStudy (saifoo.khan):

It's correct @jdillon

OpenStudy (saifoo.khan):

Whenever you get 0 in denominator, it means that the fraction is undefined. The slope is undefined in this case too. In other words, the line is parallel to y-axis.

OpenStudy (anonymous):

yup, meaning the line is just a vertical line with an undefined slope

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