Question

http://prntscr.com/5eyx0k

@roz_mar23 @ganeshie8 @hartnn @mathstudent55 @cwrw238 @wio @texaschic101 @blurbendy

Answer 1

?

Answer 2

I thought the answer would be y = 3x - 20 but it's not.

Answer 3

slope = (y2-y1) /(x2-x1)

(x1,y1) = (9,7)
(x2,y2) = (4,-8)

y - y1 = slope(x-x1)

Answer 4

?? @sangya21

Answer 5

whats the question

Answer 6

your given eq is
\[y - ? = ?(x-9)\]

This is a point slope form
y-y1 = m(x-x1)

(x1,y1) are the coordinates (given)

m = slope

\[slope = \frac{ y_2 - y_1 }{ x_2 - x_1 }\]

Answer 7

But what about the equation?

Answer 8

y-y1 = m(x-x1)

is the desired equation

Answer 9

I don't understand .

Answer 10

thats confuzing what grade are you in irespect?

Answer 11

you need to find the eq
y-y1 = m(x-x1)

Answer 12

-3x + y = -20 but that isn't right..

Answer 13

y-y1 = m(x-x1)

m = (y2-y1)/(x2-x1)
m = (-8 -7)/(4-9) = -15/-5
m = 3

y-y1 = m(x-x1)
y-7 = 3(x-9)
3x - 27 = y-7
3x -y = 20

Answer 14

Yeah but look at the screenshot, it isn't right.

Answer 15

That equation won't fit.

Answer 16

you need to write 7 in first blank and 3 in second blank.

Answer 17

Oh okay, thanks.

Answer 18

Anytime :)