BTGmoderatorDC wrote:
In the rectangular coordinate system above, if the coordinates of point P are (5,y), what is the value of y?
(1) The coordinates of point M are (5,0).
(2) The coordinates of point N are (0,−4).
OA
B
Source: Princeton Review
Given that the coordinates of point P are (5, y), we know that OM = 5; we have to get the value of ON = y.
Let's take each statement one by one.
(1) The coordinates of point M are (5, 0).
=> OM = 5. We already know this. Moreover, we do not need this information. Insufficient.
(2) The coordinates of point N are (0, −4).
=> ON = y = -4. Sufficient.
The correct answer:
B
Hope this helps!
-Jay
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