What is the slope of the line that passes through the points (-2,5) and (1,4)?

↳Redirected from "How many moles of sodium hydroxide are needed to neutralize 1 mole of phosphoric acid?"
1 Answer
Shell
Dec 8, 2016

The slope #m=-1/3#.

Explanation:

The formula for slope #m# of a line connecting
two points #(x_1,y_1)# and #(x_2,y_2)#is #m=frac(color(blue)(y_2)-color(red)(y_1))(color(blue)(x_2)-color(red)(x_1))#.

#color(red)((x_1,y_1)=(-2,5))color(white)(aaa)color(blue)((x_2,y_2)=(1,4)#

#m=frac{color(blue)(4)-color(red)5}{color(blue)1-color(red)(-2)}=(-1)/3=-1/3#

Related questions
See all questions in Slope
Impact of this question
8922 views around the world
You can reuse this answer
Creative Commons License