Question

Find the slope, if it exists, of the line containing the pair points. (-2,-12) and (-3,-20)

Answer 1

the formula for slope is \[\frac{y_2 - y_1}{x_2 - x_1}\]
are you familiar with that formula?

Answer 2

OK

Answer 3

I AM GOING TO SET THE PROB

Answer 4

HOW IS IT WRITTEN IN A SIMPLIFIED FRACTION

Answer 5

and how would I know if it is undefined?

Answer 6

@Hero it should be 20 - 12 not 20 + 12

Answer 7

omg

Answer 8

how did you figured that compared to their workout?

Answer 9

use y = mx + b

-20 = -3m + b
-12 = -2m + b

b = 3m - 20
b = 2m - 12

b = b

3m - 20 = 2m - 12
3m - 2m = 20 - 12
m = 8

Answer 10

he just made a simple error

3m - 20 = 2m - 12

if he adds 20 to both sides and subtracts 2m from both sides it becomes

3m - 2m = 20 - 12

Answer 11

@abb50, I'm trying to cover my own tracks here. I appreciate you pointing out the mistake, but I already corrected it.

Answer 12

ok thank you and how could i solve if it is undefined or does it has a fraction?

Answer 13

If it is undefined, then just write "slope is undefined"

Answer 14

I think it has a fraction

Answer 15

Nope, an undefined slope cannot be written in fraction form because it is mathematically undefined, meaning no mathematical expression can represent something that cannot be explained mathematically. In other words, an undefined slope does not exist in math.

Answer 16

oh ok so this one does not have a fraction and it is undefined

Answer 17

thank you

Answer 18

This one has a slope m = 8

Answer 19

ok so how would i type this as a integer should i just put m=8 for the slope?

Answer 20

You sound like you're completely lost. If that's the case, I cannot help you.

Answer 21

lol