Question

Graph (1, 2) slope =3

Answer 1

I graphed (1, 2) but I have the slope -3 which way do I move in down or the right/left?

Answer 2

find x and y

Answer 3

The answer?

Answer 4

first find x and y then you can find the answer...:)

Answer 5

How its not making any sense to me?

Answer 6

just find it please.

Answer 7

(1,2) is the same as (x,y) right?

Answer 8

where, x=1 ,y=2

Answer 9

Yea it is

Answer 10

yes,right.

Answer 11

then the slope is three.

Answer 12

@hubbabubba , did you find that?

Answer 13

make sense now? :)

Answer 14

Nope

Answer 15

@yamyam yes it does make sense but what if its negative which way do I move?

Answer 16

For negative slope, you want x and y to change in opposite directions.... so you either go UP and LEFT, or DOWN and RIGHT.

Answer 17

@DebbieG , said...

Answer 18

So either is right? @debbieG

Answer 19

so when 3 is the slope , it is understood that 3 / 1 , move up three times move right 1 time , is this correct @PFEH.1999 ?

Answer 20

Right???

Answer 21

Thats wat I was thinking tho

Answer 22

yes.

Answer 23

but @DebbieG can help you better.

Answer 24

Actually theres soneone else wbo helped me and I really understood it perfectly.

Answer 25

Someone*

Answer 26

Yes, @PFEH.1999 has it exactly.

You just need one other point.

You have x=1, y=2 and a slope of -3

So you can EITHER change y by +3 and x by -1
OR
change y by -3 and x by +1

Either will give you another point on the line.

x=1, y=2
Option 1 gives you x=0, y=5
Option 2 give you x=2, y=-1

Both are points on the line, you only need 1 of them but you can get either

Something like this:
one.

Answer 27

Ok wat if the points are (-2,-3) and slope is undefined? And please one by one not together. I only listen to one person at a time

Answer 28

Wow nice way of explanation :D

Answer 29

Do you know what kind of line has undefined slope? There is something "special" about a line with undefined slope.

As soon as you hear that the slope is undefined, you should think,
"Oh, well then this is a ________________ line!"

What goes in the blank? :)

Answer 30

Vertical?

Answer 31

remember!
tan90 = undefined

Answer 32

Exactly! and a vertical line does NOT depend on the y-coordinate, only on the x-coordinate! So y is not involved in the equation for the line.

Instead, the line has equation:

x=a for some CONSTANT value of a. All you need to KNOW is the x-coordinate, because for ANY value of y, the point (a, y) is somewhere on the line.