In the rectangular coordinate system above, if the coordinates of poin

Question

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).

saurabh87 · Answer

I am getting E

Since we are not sure whether NP is perpendicular to MP, we cant determine y=-4..

Can we trust the figure in DS?

CounterSniper · Answer

Although not drawn to scale ... we can take NP to be perpendicular to Y axis and MP perpendicular to X axis.

though we cannot say info in statement 1 is sufficient.
statement 2 is definitely sufficient.

14101992 · Answer

How do you know PN is parallel to the x-axis. If it is given that it is parallel, then the answer will be B.
The answer should be E in this case.

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P.S. Don't forget to give kudos

ShreyasCM · Answer

B.Statement 2 alone is sufficient.
The points M and N are projections of P on x and y coordinates. So PN || x axis and PM || y axis.

Sent from my A114 using  GMAT Club Forum mobile app

14101992 · Answer

ShreyasCM 
It is nowhere stated that M and N are projections of P on x and y coordinates. As far as I know, one should always consider what is given in the question rather then 'assume' on his/her own. P can have coordinates (5, -4.00000000000000000000001). In this case also the figure would look like the one given in the question.

ShreyasCM · Answer

For your kind information can you please check the OA mentioned in the below link, www.gmatclub/forum/in-rectangular-coord ... 221304.htm Sent from my A114 using GMAT Club Forum mobile app

saurabh87 · Answer

Experts please explain why B??

LogicGuru1 · Answer

In the rectangular coordinate system above, if the coordinates of point P are (5,y), what is the value of y?
We need the exact coordinate for y

I am working with the assumptions that they dotted lines are supposed to be parallel to the x and y axis. (this belief was bolstered when I saw the 2nd statement and found out that p and m has the same x coordinate x=5 and thus the sole purpose of the dotted line is to show parallelism. If you don't agree then the answer will change to E)
(1) The coordinates of point M are (5,0).
All we know from this is that p and m are two points on a vertical line passing through x=5
Gives no info about y. Not even some other hint to derive "y" by using distance formula or midpoint formula, pythagorys theorem... NOTHING to move with forward with.
INSUFFICIENT

(2) The coordinates of point N are (0,−4)
Delivers us the value of Y on a platter. y = -4 
This is what we are looking for. P becomes (5,-4)
SUFFICIENT

ANSWER IS B

BrentGMATPrepNow · Answer

I have a feeling that the diagram in the original question (in the Princeton Review book) had some information that was not included in the poster's diagram. 
I say this because, without any additional information, the answer is E

hsbinfy · Answer

answer should be E.

as discussed above nowhere it is stated that line is parallel to x axis.

abhimahna · Answer

Answer should be B.

OG clearly states that Diagrams should be taken as a source of truth unless clearly stated that Diagrams are not drawn to scale.

Since, in this question, nothing of that sort is mentioned, we will assume(as per OG) that PM and NP are perpendicular to respective axis.

truongvu31 · Answer

Can you provide a reference for this?

Bunuel · Answer

In its current form, the answer tot the question is E, not C. We cannot assume that angle P is 90 degrees. This is why the question is tagged as poor quality.

LOCKING THE TOPIC.

In the rectangular coordinate system above, if the coordinates of poin

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In the rectangular coordinate system above, if the coordinates of poin

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