The three points are on the same line, so the slopes formed by any of the two points stay the same
[-7-(-5)]/(-1-0)=[n-(-5)/(1-0)
(n+5)=2
n=-3
1.25 L = 1250 mL making it equal to 1250 mL
* The force of friction acts in opposite direction in which the surface is having tendency to move .
* the force of friction is equal to force applied to surfaces , so long as surface is at rest .
All you do is add a negative sign to 80/49 and then simplifiy
