Answers

  • Brainly User
2015-12-11T18:39:45+05:30
Slope=y1-y2/(x1-x2)
where y1,x1 ,y2and x2are the coordinate of a point on the line
anyways 
when line is parallel to y axis which means x coordinate will remain same throughout
which implies that
x1-x2=0
slope=y1-y2/0
which is undefined
2 4 2
x1 and y1 are the coordinats on line or on x axis??
Comment has been deleted
Comment has been deleted
Comment has been deleted