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Please explain the whole solution. I don't understand it.

where exactly are you stuck on the solution?

|dw:1443244678300:dw|

|dw:1443244692570:dw|

ok

|dw:1443244719667:dw|

|dw:1443244752626:dw|

one question

go ahead

for the second lienear function f(x)= -x +2
why 2 is not the y-intercept?

extend out the middle piece in both directions
you'll see that piece cross 2 on the y axis

|dw:1443244906871:dw|

right :D

what do you mean by overlap?

I believe connected does not mean overlapped

by overlap, I mean defined in multiple places

Oh I see, and the last question. Can we say we have 3 formulas for the function?

think of the 3 restrictions as number lines|dw:1443245579767:dw|

oh i didnt see tha tin the book , i was just wondering

now if we had x >= 2 for the third piece, then we have this overlap
|dw:1443245694279:dw|

Right, hollow ones mean the number itself does not include

So if both are full. means overlapped becaue the numbers are present in two different equations.

exactly

@jim_thompson5910 thank you my friend. I felt like I was in a classroom. lol

is it legal to reverse each solid - dot combo in between functions?

**
solid - open

i am guessing yes, since it describes the same thing, maybe

I think that step function wasopen - solid

k, that is what i was trying to say, solid-open endpoint combo switch deal.. blahh

of course if that value is defined for both functions