What is the formula to find the slope given two points?

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Answer 1 · 2014-11-13T01:38:02

Slope Formula

The slope formula of the line passing through the points #(x_1,y_1)# and #(x_2,y_2)# can be found by:

#m={y_2-y_1}/{x_2-x_1}#

So to find the slope of a line segment joining the points ( 2, - 5) and (- 2, 4).

First, label the points as #x_1# = 2, #y_1# = - 5, #x_2# = -2 and #y_2# = 4

#m={y_2-y_1}/{x_2-x_1}# = #{4- -5}/{-2- 2}# = #{9}/{-4}# = #{-9}/{4}#

So, the slope (#m#) = -9/4.