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|dw:1439228461781:dw|

y=mx+b

\(\Large y-y_1=m(x-x_1)\)
Where x1,y1 is the given point
and m is the slope

That is the point slope formula ^^

i really need to understand that for future problems

Yes, i understand.
|dw:1439228871702:dw|

then what about the Y what is the y then?

For example. The graph y=x
|dw:1439229116348:dw|

so when it says (2,7) is on the number line does that mean it's a constant?

So can you tell me how to spot the constant?

Makes sense? Can we do some math now?

oh okay so do we use (-2,7) to find the constant?

Yes!! :D

oh okay and 7 is the b intercept right?

oh okay

oh okay i got it

Good. Can you construct the equation now?

|dw:1439229923659:dw|

|dw:1439230074071:dw||dw:1439230059277:dw|

oh okay so use the 2

|dw:1439230149474:dw|

|dw:1439230219311:dw|

so whats the next step?

The next step is to find the x-intercept. How would you do that?

no we did it wrong

it's suppoed to be -5/3(-2) not positive 2

so it's -5/3+11/3

-5/3x+11/3

how come this works?

|dw:1439231685078:dw|

What works?

|dw:1439231764295:dw|

|dw:1439231837457:dw||dw:1439231907266:dw||dw:1439231951916:dw||dw:1439232046132:dw|

pardon my mouse handwriting

it's ok i get it now thanks you

Anytime