Question

Choose the equation of the vertical line passing through the point (-4, 2)

Answer 1

ok, do you know what the slope of a vertical line is?

Answer 2

noo

Answer 3

what is a slope formula anyway?

Answer 4

y=mx+b

Answer 5

@jdoe0001

Answer 6

well, that'd be the slope-intercept form, so, how do we find the slope of any 2 points though?

Answer 7

rise over run

Answer 8

right, so, rise will be \(y_2 - y_1\)

Answer 9

let's see a vertical line

Answer 10

you have (-4, 2)
so, when x = -4, y = 2

what about if x is ... wait.... is a vertical line, "x" can't be anything than just -4
but "y" can be anything 1,000, 0000 and so on

Answer 11

so, the "rise" can be a number from 0- \(\infty
but "run" is always -4, -4-4, is well "0", anyhow, the slope is undefined

so, the line equation will be

x = -4

just a fixed straight line, doesn't matter what "y" is, "x" will always be equal -4

Answer 12

so the answer is x=-4 ?

Answer 13

yes, all vertical lines only have 1 "x" variable component, and no "y", because it doesn't matter how big "y" gets, "x" will always be the same number

Answer 14

Thanks !!!! :) help me with a few more ??

Answer 15

sure, just post in the channel, so we all can see and help and revise each other :)

Answer 16

okay :)

Answer 17

yw

Answer 18

Choose the equation of the line passing through the point (-4, -2) and parallel to y = x + 2 @jdoe0001

Answer 19

well, I meant post in the channel, as in the main channel

Answer 20

i did

Answer 21

@jdoe0001

Answer 22

I see it :)