Question

Find the slope of line passing through the points (11, -2) and (2, -2).
Would the answer be 9?

Answer 1

nope thats not right
would you like to show your work so i can figure it out where you did mistake

Answer 2

Yeah. That's what I got, but I'm not sure if I'm even doing it right.

Answer 3

okay that;s fine i guess you was doing it right
but at the end you did some mistakes
its much better if you show your work :)
so i can see where you did mistake :)

Answer 4

Someone told me to figure it out by

Y-y1 over x-x1

So
-2 - -2
11 - 2
I got
0/9

Answer 5

haha, was that me?

Answer 6

you are right, the y values are the same, it will be horizontal line of slope 0

Answer 7

okay so what is 0/9 equal to

Answer 8

0/9 = 0
so slope is 0
but if you have 9/0 then slope should be undefined
you cannot divide by 0

Answer 9

remember the two special cases i typed out before

#/0 = undefined slope ,vertical line

0/# - zero slope, horizontal line

Answer 10

lol we are thinking in sync Nnesha.. sorry to interrupt here

Answer 11

Yeah. So for example if I got 3/8 the answer would be 3?

Answer 12

no, the answer would be slope = 3/8

Answer 13

And so if it's 0/9 it's undefined because it's 0?

Answer 14

everything else is a valid slope, any fraction

the two special cases are vertical and horizontal lines

vertical lines being undefined slope
horizontal lines being zero slope

Answer 15

no, zero over a number is zero

Answer 16

Okay I understand it now.

Answer 17

if you divide something by 0 then undefined

Answer 18

\[\frac{ 0 }{ number } = 0~~~horizontal ~slope\]
\[\frac{ number }{ 0 }= undefined ~slope\]

Answer 19

anything else, that doesnt include a zero, is a valid slope for the line