What is the equation of the graphed line? Hint: Determinehttp://assets.openstudy.com/updates/attachments/5445ef27e4b02731fd676c4c-igivemedalsandfollow%2521-1413869368788-ms_imc1405161000015.jpg the slope of the line.
@mayankdevnani
@igivemedalsandfollow! can you identify (0,0) , (-1,5) and (1,-5) these points in your graph ?
yes
good
then,we have a formula for finding the slope of a line :- \[\large \bf Slope=\frac{y_2-y_1}{x_2-x_1}\] where, (x1,y1) and (x2,y2) are points on a straight line.
lets consider two points be :- (0,0) and (-1,5)
understood?
yes
good :)
now plug the points in the given formula :- \[\large \bf Slope=\frac{5-0}{-1-0}=\frac{5}{-1}=-5=\large \bf \color{red}{Answer}\]
so its -5
and we denote SLOPE of a line by `m`
yeah. @igivemedalsandfollow!
do I wrtite -5m??
no, m=-5
we denote SLOPE=m
for BETTER UNDERSTANDING :- https://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/slope-and-intercepts/v/slope-of-a-line
hope you understand. @igivemedalsandfollow!
can you help me with some more???
yeah,why not ?
post it !!
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