Question

JUST THE ANSWER PLEASE TIME CRUNCH!!! Find the value of x so that the line passing through (-2, 7) and (x, 2) has a slope of -1/3

Answer 1

13

Answer 2

oooh guess we gotta hurry
\[\frac{2-7}{x+2}=\frac{1}{3}\]

Answer 3

i saw you just went though a question exactly like this, so um....

Answer 4

There is your answer though

Answer 5

yeah sometimes it is best just to cut to the chase

Answer 6

5/ x+2

Answer 7

i just need more practice..

Answer 8

ok \(2-7=-5\) so
\[\frac{-5}{x+2}=-\frac{1}{3}\]

Answer 9

this stuff makes me want to slam my head through a wall

Answer 10

lol wait til you get to the hard stuff

Answer 11

oh great.....

Answer 12

in any case \[\frac{-5}{x+2}=-\frac{1}{3}\\
15x=x+2\]

Answer 13

It is actually pretty simple if you think about what you are doing.
You are just measuring how much the change in height changes vs how much the change in distance is for a line.

Answer 14

lol
\[15=x+2\\
x=13\] like @DanJS said

Answer 15

-1/3 just means, that for every 1 step down, you move over 3 steps for a line

Answer 16

the problem with this or any math is that if you make a mistake at the beginning. like \(2-7=5\) you can never recover from it later
it will be wrong from there on in

Answer 17

ok.. kinda getting it but the more practice the better what do u guys think of this problem- Find the slope of the line that passes through (-2, 7) and (-2, 9).

Answer 18

don't even try it!

Answer 19

now slope is the x1, y1 thing right?

Answer 20

the x coordinates are the same

Answer 21

that means the line is vertical, and a vertical line does not have a slope

Answer 22

so don't start to compute it ,you cannot

Answer 23

@DanJS @misty1212

Answer 24

you can try... you will get
\[\frac{9-7}{-2+2}=\frac{2}{0}\] but that is not a number