the red part next to the x is our slope
the blue part is where our line touches the y axis
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OpenStudy (camper4834):
so lets do this
y=( )x+4
OpenStudy (camper4834):
i told you only the 4 will help us and so i put it into our equation for a line
OpenStudy (camper4834):
positive 4
OpenStudy (camper4834):
now what will go in the parenthases?
OpenStudy (anonymous):
rise 4 and left 1/2
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OpenStudy (anonymous):
1/2?
OpenStudy (camper4834):
almost!
OpenStudy (camper4834):
you got the number right! but! since our line is going DOWN it is negative
OpenStudy (anonymous):
ooh sorry
OpenStudy (anonymous):
I was going to write -1/2 though
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OpenStudy (camper4834):
okay then good! as long as you know then that is fine!
but make sure you remember for tests..... i can't tell you how many times I forgot the negatives on tests......
OpenStudy (camper4834):
\[y=-\frac{ 1 }{ 2 }x+4\]
OpenStudy (anonymous):
yeah me too in seventh grade my teacher went crazy trying to warn me about the negative XD
OpenStudy (anonymous):
okay so the sign has to point > right....
OpenStudy (camper4834):
mmm that depends
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OpenStudy (camper4834):
mmmm i will answer no
OpenStudy (anonymous):
yeah
OpenStudy (camper4834):
because our Y has to be LESS than -1/2x+4
OpenStudy (camper4834):
see how the shaded area is on bottom?
OpenStudy (camper4834):
bottom=less
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OpenStudy (anonymous):
yes
OpenStudy (camper4834):
the symbol for less is <
OpenStudy (camper4834):
y<
OpenStudy (anonymous):
so the answer is B?
OpenStudy (anonymous):
but I see that they are positive no wait
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OpenStudy (camper4834):
ahh good! you weren't tricked!
OpenStudy (camper4834):
it is not B
OpenStudy (anonymous):
then it could be A?
OpenStudy (camper4834):
yes!
OpenStudy (anonymous):
really?
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