What is the slope of the line through points (1,9) and (1,-5)?

1 Answer
Don't Memorise
May 6, 2016

The pair of points have no slope.

Explanation:

#(1 , 9) = color(blue)(x_1 , y_1)#

#(1 , -5) = color(blue)(x_2 , y_2)#

Slope is calculated using formula:
Slope #= color(blue)((y_2 - y_1)/ (x_2 - x_1)# (change in# y# axis divided by change in #x# axis)

#= (-5-9) /( 1-1)#

#= (-14) /( 0) = # not defined.

The pair of points have no slope.

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