Question

Write an equation of a line in point slope form that has a slope of -3 and passes through the point (3, -4). Do not use spaces and enter fractions as improper reduced fractions when needed.

Answer 1

this is pretty straightforward...plug it in the formula for point slope
\[\huge y - y_1 = \frac{y_2 - y_1}{x_2- x_1} (x-x_1)\]

Answer 2

oh wait...wrong formula

Answer 3

use \[ y- y_1 = m(x-x_1)\]

Answer 4

use the formula
y-y1 = m(x - x1)
where m = slope and (x1,y1) is a point on the line

Answer 5

its Y=mX+B

Answer 6

nooo...that's the slope-intercept :)

Answer 7

You're so quick lgba...I can't keep up lol

Answer 8

ooh wait nevermind..

can someone show how to do it Step-by-Step please

Answer 9

I have a nice tutorial on that, can't find it :(

Answer 10

lol you should see us back in the days =))))

Answer 11

okay @Trexy what is the y-coordinate in this problem?

Answer 12

@Calcmathlete wat do you think Hes smart.. and you too .. thats why I need help you guyz

Answer 13

@zepp maybe you should make a table of contents too? :)

Answer 14

Didn't eyad make a tutorial on this like just now?

Answer 15

i didnt see it @Calcmathlete
and please help me how to do this

Answer 16

AH!

Answer 17

>>>>>>>>>> Situation 3. The slope and a random point of the function are given
I roll a dice.. I got 2 and 92, so our random point is at (2,92)
I roll a dice again... got 3..

D:

Point-slope form!
\[\large y - y_{1} = m(x-x_{1})\]\[m= slope; ~~~~x_{1} ~and~y_{1}: A~point~on~the~function\]
2 is x1, 92 is y1
\[\large y - y_{1} = m(x-x_{1})\]\[\large y - 92 = 3(x-2)\]\[\large y - 92 = 3(x-2)\]Distribute...\[\large y - 92 = 3x-6\]\[\large y = 3x-6+92\]\[\large y = 3x+86\]

Answer 18

like i said @Trexy what's the y-coordinate in the problem?

Answer 19

I kept the LaTeX version of my tutorial, this is an example :)

Answer 20

lol @zepp maybe reread the problem?

Answer 21

Simply plug \(x_1,y_1\) and simplify it.

Answer 22

Calc, that was an example :x

Answer 23

I know, but we don't need to put it into slope-intercept, just point-slope

Answer 24

i think he was just quoting himself

Answer 25

:(

Answer 26

Thank You ..

I heart Everyone Here since I cant give all of you a Medal.. hahah

Answer 27

ALright. @Trexy in order to use point-slope form, do the following.
\[y - y_{1} = m(x - x_{1})\]Plug in the slope which is given and plug in the coordinates.
m = -3
\(x_{1} = 3\)
\(x_{2} = -4\)

Answer 28

\(y_2=-4\)*

Answer 29

Oops Yeah. What ^ said.

Answer 30

hmm i've been trying so hard since a while ago to teach but no ones responding lol..nevermind :p

Answer 31

Me @lgbasallote ??