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Mathematics 8 Online
OpenStudy (anonymous):

Can someone help me with the attachment below?

OpenStudy (anonymous):

OpenStudy (anonymous):

the first one is sooooooo easy haha

OpenStudy (anonymous):

I got the first one... I think I need help on the rest of them

OpenStudy (anonymous):

you just have to write down the 2 linear equations, the first one is... y = 5 and y = x you see the both lines?

OpenStudy (anonymous):

y = 6 i mean

OpenStudy (anonymous):

I have the first one done..

OpenStudy (anonymous):

second one, lets start with the blue line, so to get the y-int, which is "b" in y = mx + b, you count how many steps it went up from 0. as we see it went 2 steps up. so, so far we got y = mx + 2 to find the slope, which is "m" you just do the run over rise. which is 1 so y - x + 2 make sense? if the line is going uphill its positive, if its going downhill its negative

OpenStudy (anonymous):

y = x +2 ..typo again

OpenStudy (anonymous):

Okay...

OpenStudy (anonymous):

do the green one, ok so whats the first step?

OpenStudy (anonymous):

So its that the anwer to the blue one?

OpenStudy (anonymous):

yea..

OpenStudy (anonymous):

But the example is like this....

OpenStudy (anonymous):

oh right.. inequalities... mmm what did you say you got for the first one?

OpenStudy (anonymous):

\[y \le6\]]

OpenStudy (anonymous):

\[y \ge1x\]

OpenStudy (anonymous):

ok, so think about it for a sec, why is it y <=6? by looking at the graph

OpenStudy (anonymous):

I dont know.. Because i don't know im just super confused on everything

OpenStudy (anonymous):

ok so if you look at the blue shaded region, all of it us UNDER 6. that is why Y is less than or equal to 6. because its all under it.

OpenStudy (anonymous):

Okay.. So then then the green is all more than 6?

OpenStudy (anonymous):

yea, but since they dont shade it with blue, obviously thats not the answer

OpenStudy (anonymous):

Okay.. so what does that mean?

OpenStudy (anonymous):

pretend you are just doing the line y = mx + b, then do the < > part. if the shaded region is the top/left side, iyts always y =>, and if the shaded region is the bottom or right its always y =<..... and it its a dashed line, you dont use the equal sign just < and >.

OpenStudy (anonymous):

THANK YOU!

OpenStudy (anonymous):

ok good! lol

OpenStudy (anonymous):

Can you just help me with number 5? Because it has a vertical line and Im not really sure what to do with that?

OpenStudy (anonymous):

vertical lines are x. so x => 0

OpenStudy (anonymous):

thank you

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