Question

Plz Help!!
Find the slope of a line on a graph (-2,-1), (-4,4)

Answer 1

@dan815

Answer 2

i know u gave me the formula i dont understand it though

Answer 3

you can totally do this! \[\frac{ y-y_1 }{ x-x_1 }\] just plug in the numbers...

Answer 4

um....i cant lol im not smart

Answer 5

(-2,-1) and (-4, 4)...let's start with what are your y-coordinates?

Answer 6

coordinates/ordered pairs are always written as (x,y).

Answer 7

1 and 4

Answer 8

check again...negatives matter

Answer 9

-1,4?

Answer 10

bingo! ok, so let's plug that in...\[\frac{ y-y_1 }{ x-x_1 }=\frac{ -1-4 }{ x-x_1 }\]

Answer 11

now let's figure out our x-coordinates...

Answer 12

then -2,4

Answer 13

your coordinates are (-2,-1) and (-4,4) so I agree with -2 being an x-coordinate, but what's the first number in the 2nd set of coordinates?

Answer 14

@Whalexnuker

Answer 15

-4

Answer 16

ok, so this is the tricky part...

Answer 17

\[\frac{ -1-4 }{ -2--4 }\]

Answer 18

do you see how -1 is the first number on top and -2 is the first number on the bottom? That's because those 2 numbers go together (-2,-1)

Answer 19

there is only one -4

Answer 20

ya

Answer 21

the denominator (bottom) says -2 minus -4

Answer 22

oh lol srry

Answer 23

it's ok :) do you know how to subtract negative numbers?

Answer 24

ya

Answer 25

-6

Answer 26

after this i have one more

Answer 27

-2-(-4) isn't going to equal -6. that would be true if you were adding, but you're subtracting.

Answer 28

subtracting a negative is like adding a positive...so instead of -2-(-4) think -2+4

Answer 29

oh so then 2

Answer 30

perfect, what about the top number?

Answer 31

-1-4

Answer 32

-5

Answer 33

so put it all together and you have your slope! -5/2

Answer 34

thnk you so much

Answer 35

you are so very welcome! I wish I could stay and help more, but I have work in the morning. Good luck on the rest of your problems!