Question

Find the slope of line passing through the points (5, 9) and (5, -2)


-11

0

11

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Answer 1

slope is (y2-y1)/(x2-x1)
find it??

Answer 2

undefined

Answer 3

same abscissa ----> vertical line
vertical lines have undifined slope

Answer 4

slope = y2 - y1/(x2 - x1)
= -2 - 9/(5 - 5)
= -11 / 0
Therefore this ine is parallel to y axis which you can also see as x coordinate is equal.
Angle = 90 degree.
tan90 = Therefore undefined.