Solve the system of inequalities by graphing.
y≤-x-2
y>3x-3
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OpenStudy (anonymous):
will give medal
OpenStudy (anonymous):
@blurbendy
OpenStudy (anonymous):
@satellite73
OpenStudy (mathstudent55):
Do you know how to graph the equation of a line?
For example, can you graph y = x - 2?
OpenStudy (anonymous):
yes
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OpenStudy (mathstudent55):
Ok. To graph the inequalities you have, you start with the corresponding line.
Let's do it one inequality at a time.
OpenStudy (anonymous):
think it is actually \(y=-x-2\) right?
OpenStudy (anonymous):
kk
OpenStudy (anonymous):
now i will be quiet so @mathstudent55 will explain
OpenStudy (anonymous):
no
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OpenStudy (anonymous):
xD
OpenStudy (mathstudent55):
@satellite73 Thanks.
Let's start with the first inequality.
First think of its corresponding equation. All you do is change the inequality sign to an equal sign.
y = -2x - 2
OpenStudy (mathstudent55):
Since the original inequality has a less than or EQUAL to sign, graph the corresponding equation with a solid line.
OpenStudy (anonymous):
????
OpenStudy (mathstudent55):
@Hero that has been taken care of above. See satellite73's comment.
Then take one point not on the line and test it in the inequality
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OpenStudy (mathstudent55):
Oh, now I get it. thanks @Hero
OpenStudy (anonymous):
which one do i graph
OpenStudy (mathstudent55):
Ok, sorry about that.
The first inequality is
y ≤ - x - 2
Let's graph its corresponding equation using a solid line.
y = -x - 2
OpenStudy (anonymous):
so graph y=-x - 2
OpenStudy (mathstudent55):
Yes.
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