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Mathematics 17 Online
OpenStudy (anonymous):

@camper4834

OpenStudy (anonymous):

OpenStudy (camper4834):

okay lets find the dotted line

OpenStudy (anonymous):

(8,4)

OpenStudy (camper4834):

not quite

OpenStudy (camper4834):

if i take what you gave me i would put a dot at (8,4)

OpenStudy (camper4834):

but i know what you mean

OpenStudy (camper4834):

the only thing that will help us though is the 4

OpenStudy (camper4834):

remember earlier? \[y=\color{red}{\frac{ 1 }{ 2 }}x \color{blue}{+2}\]

OpenStudy (anonymous):

yeah

OpenStudy (camper4834):

the red part next to the x is our slope the blue part is where our line touches the y axis

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

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

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

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

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

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?

OpenStudy (anonymous):

this is fun XD

OpenStudy (camper4834):

yes

OpenStudy (camper4834):

y<-1/2x+4 is the same as y+1/2x<4

OpenStudy (anonymous):

yeah

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