Question

Which is the slope of a vertical line?

Answer 1

undefined

Answer 2

if you try to use the slope formula you will get a number over 0 which is not possible and therefore it is undefined

Answer 3

thank you very much !!!

Answer 4

anytime, would you like me to show you a way to remember your slopes

Answer 5

ok in case you want to learn it the fast way

Answer 6

is a line goes up then the slope is positive the + sign underneath the line reminds us that the line above is going up,
we read lines from left to right

Answer 7

if a line goes down, the slope is negative

Answer 8

vertical line is undefined that is what the u reminds us

Answer 9

horizontal line across is zero slope the two little 0 reminds us about that

Answer 10

this is called slope guy and he reminds us of all of the 4 possible slopes