GMAT Math : Coordinate Geometry

Study concepts, example questions & explanations for GMAT Math

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Example Questions

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Example Question #5 : Dsq: Calculating The Midpoint Of A Line Segment

Find the midpoint of segment .

I) Endpoint  has coordinates of .

II) Endpoint   coordinate is half of , and   coordinate is one sixteenth of   coordinate.

Possible Answers:

Either statement is sufficient to answer the question.

Statement II is sufficient to answer the question, but statement I is not sufficient to answer the question.

Statement I is sufficient to answer the question, but statement II is not sufficient to answer the question.

Both statements are needed to answer the question.

Neither statement is sufficient to answer the question. More information is needed.

Correct answer:

Both statements are needed to answer the question.

Explanation:

To find the midpoint of a segment we need both endpoints

I) Gives us one endpoint.

II) Gives us clues to find the other endpoint. 

 has coordinates of 

Use midpoint formula

 

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