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New Member
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Jul 23, 2013, 02:20 PM
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True or false
The ordered pair (3,-2) is a solution to the system of inequalities, Y< x -3, Y> -x -2
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Welbeing Expert
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Jul 23, 2013, 06:26 PM
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We can't give you the answer, but we can help you. Did you plug in your x and y value? If so, what do you come up with?
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Junior Member
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Jul 23, 2013, 07:07 PM
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-2<3-3, -2>-3--2 The second half of the equation is wrong if y=-2. -3 takeaway -2 means -3 + 2, which equals -1. -2 is not bigger than -1 it is smaller than.
So the answer is false.
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Welbeing Expert
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Jul 23, 2013, 07:17 PM
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That's what I got.
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Expert
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Jul 24, 2013, 05:45 AM
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Originally Posted by Tumandygram11
The ordered pair (3,-2) is a solution to the system of inequalities, Y< x -3, Y> -x -2
Originally Posted by 1102568
-3 takeaway -2 means -3 + 2, which equals -1. -2 is not bigger than -1 it is smaller than.
So the answer is false.
I disagree. In the original post the OP wrote that the second inequality to evaluate is: Y > -x - 2. But here you are using Y > -x -(-2). Check your minus signs!
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Welbeing Expert
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Jul 24, 2013, 08:57 AM
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Originally Posted by ebaines
I disagree. In the original post the OP wrote that the second inequality to evaluate is: Y > -x - 2. But here you are using Y > -x -(-2). Check your minus signs!
2 negatives become a positive, right? I come up with -1 on the second part as well. -2 is not greater than -1, so the answer would be false, right? Unless I am missing a step, which I could be. It has been a while.
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Expert
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Jul 24, 2013, 09:06 AM
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My point was that given Y> -x-2, if you substitiue -2 for Y and +3 for x and you get:
-2 > -(3)-2, or
-2 > -5
which is true.
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Welbeing Expert
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Jul 24, 2013, 09:21 AM
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Originally Posted by ebaines
My point was that given Y> -x-2, if you substitiue -2 for Y and +3 for x and you get:
-2 > -(3)-2, or
-2 > -5
which is true.
Ahh yes I see what my mistake was.
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