The graph of the equation xy = k, where k < 0, lies in...
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The graph of the equation xy=k, where k<0, lies in which two of the quadrants shown above?
(A) I and II.
(B) I and III.
(C) II and III.
(D) II and IV.
(E) III and IV.
The OA is D.
Please, can any expert assist me with this PS question? I don't have it clear and I appreciate if any explain it for me. Thanks.
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Hello AAPL.
Let's see your question.
As k<0, then "x" and "y" must have differents signs. The cases are:
1- x>0 and y<0, which is the quadrant IV
2- x<0 and y>0, which is the quadrant II
So, the correct answer is D .
I hope this explanation may help you.
I'm available if you'd like a follow up.
Regards,
Let's see your question.
As k<0, then "x" and "y" must have differents signs. The cases are:
1- x>0 and y<0, which is the quadrant IV
2- x<0 and y>0, which is the quadrant II
So, the correct answer is D .
I hope this explanation may help you.
I'm available if you'd like a follow up.
Regards,
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