Question

What is the equation of the line?

A: y = -2x

B: y = -1/2x

C: y= 1/2x

D: y=2x

Answer 1

What's the slope? Should be able to eyeball it

Answer 2

If you can't see the slope use this \[ m = \frac{ y_{2}-y _{1} }{ x _{2}-x _{1} }\]

Answer 3

we know its positive because its increasing on it's domain

Answer 4

Pick any two points in the line

Answer 5

so, what next?

Answer 6

Lets not do the work for her/him.

Answer 7

i would just use rise over run, you don't even have to use the slope formula

Answer 8

Use the formula I provided.

Answer 9

Ok, now I feel as I'm being pulled to ways, which formula is best?

Answer 10

There's only one provided for you, and the only one there is.

Answer 11

\[ m = \frac{ y_{2}-y _{1} }{ x _{2}-x _{1} }\]

Answer 12

http://prntscr.com/6w7s7z

Answer 13

I'll use rise and run

Answer 14

I need this done by today

Answer 15

Rise/run is the formula. It's the same thing. But do what ever you want.

Answer 16

Yeah whichever works

Answer 17

Ok

Answer 18

Can you take it through with me, if you don't mind

Answer 19

I kinda forgot how to do slope

Answer 20

Pick two points on the line

Answer 21

slope = rise/run
rise is the change in the y-values
run is the change in the x-values

Answer 22

Any two work, it doesn't matter they will give you your (x1, y1) and (x2, y2) and you just plug and chug from there. Which is essentially rise over run.

Answer 23

Start from the y - intercept and you can eyeball it (rise/run)

Answer 24

y intercept is where the line crosses the y - axis, which is the origin here hence (0,0) which you could also use as a point for the formula.