Question

2. What is the correct equation of the line shown below?

Answer 1

y = mx + b, slope-intercept form.

Answer 2

m = slope and b = y-intercept

Answer 3

But what numbers would I use

Answer 4

Well, you would have to find the slope, and the y...

Answer 5

I dont know how u do that

Answer 6

First look at the graph and find the y-intercept.

Answer 7

How do you find the y-intercept?

Answer 8

Where does the line cross the y-axis?

Answer 9

y2-y1.

Answer 10

is the y intercept 3?

Answer 11

BVut slope is probably easier, since it is rise over run.

Answer 12

@ky.king Yes, very good.

Answer 13

@ky.king If you're suppose to do this like the question you posted previously, use:
\[\frac{ y _{2}-y_{1} }{ x _{2}-x_{1}}\]

Answer 14

Then use the coordinates and insert them into your equation.

Answer 15

From there, I think you can find the rest :)

Answer 16

yep. :)

Answer 17

@ky.king can you write the coordinates of the y-intercept for me?

Answer 18

(0,3)?

Answer 19

this stuff is to confusing

Answer 20

Yes. So that 3 is the same as the b in y=mx+b.

Answer 21

Okay so whats mx?

Answer 22

mx means m times x, where x is the same as the x-axis on the graph.

Answer 23

Okay do you know the numbers?

Answer 24

You can use any pair of numbers on the graph of the LINE, choose a particular point.

Answer 25

Pick a point and I'l show you what to do?

Answer 26

y=mx+b
y=mx+3 <----from the graph
-3=m(-4)+3 <----(-4,-3) labeled on the graph

Answer 27

(-3)+(-3)=m(-4) _______________add -3 to both sides
-6=m(-4)
(-1/4)(-6)=m____________________multipy both sides by -1/4
(6/4)=m
(3/2) = m