What is the slope of the line passing through # (3,7) ; (-5,-9) #?
1 Answer
Jan 29, 2016
slope = 2
Explanation:
The slope of a line joining 2 points can be calculated using the
#color(blue)(" gradient formula ")#
# m =( y_2 -y_1)/(x_2 - x_1) # where
#(x_1 , y_1 ) color(black)( " and ") (x_2 , y_2 ) # are 2 points.
let
# (x_1 , y_1 ) = (3 , 7 ) , (x_2 , y_2 ) =(- 5 , - 9 ) # hence m
# = ( - 9 - 7 )/( - 5 - 3 ) = (-16)/-8 = 2 #
