Question

Write an equation of the line that passes through (8, 3) and (4, 3).

Answer 1

use the formula \[y - y_1 = \frac{y_2 - y_1}{x_2 - x_1} ( x- x_1)\]
do you know how to use it?

Answer 2

wouldn't it just be y2-y1/x2-x1 w/o those other things.

Answer 3

that's the slope

Answer 4

o, then no idk how to use it.

Answer 5

but you know how to use y2-y1/x2-x1?

Answer 6

ya.

Answer 7

okay good.. solve for that. then tell me what you get

Answer 8

I got 0/4

Answer 9

so simplify it...what do you get?

Answer 10

0

Answer 11

good so like i said that's the slope

Answer 12

now do you know the point-slope formula \[y - y_1 = m(x-x_1)\]

Answer 13

no, I dont understand it.

Answer 14

okay..look back in what you did for \[\frac{y_2 - y_1}{x_2 - x_1}\]
what did you use as y1?

Answer 15

3

Answer 16

and what did you use as x1?

Answer 17

8

Answer 18

so just put that into the equation i gave. like i said m is 0 (you solved this yourself)

\[y - y_1 = m(x-x_1)\]
\[y - 3 = 0(x-8)\]

Answer 19

simplify this now

Answer 20

Got 3.