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Andrew Geller

Andrew Geller is a top GMAT tutor based out of New York City. Throughout his career he has successfully taught people from many different backgrounds, countries, and starting scores.

The graph of the equation xy = k, where k < 0, lies in which two of the quadrants shown above?

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 Correct Answer: D You’ll find tons of practice questions, explanations for GMAT Official Guide questions, and strategies on our

The graph of the equation xy = k, where k < 0, lies in which two of the quadrants shown above? Read the Full Article »

In the xy-coordinate plane, if the point (0,2) lies on the graph of the line 2x + ky = 4, what is the value of the constant k?

In the xy-coordinate plane, if the point (0,2) lies on the graph of the line 2x + ky = 4, what is the value of the constant k? A. 2 B. 1 C. 0 D. -1 E. -2 Correct Answer: A Full explanation coming soon. Send us a note if you’d like this added to the express queue! You’ll find

In the xy-coordinate plane, if the point (0,2) lies on the graph of the line 2x + ky = 4, what is the value of the constant k? Read the Full Article »

In the xy-plane, the origin O is the midpoint of line segment PQ. If the coordinates of P are (r,s), what are the coordinates of Q?

In the xy-plane, the origin O is the midpoint of line segment PQ. If the coordinates of P are (r,s), what are the coordinates of Q? A. (r,s) B. (s, −r) C. (−s, −r) D. (−r, s) E. (−r, −s) Correct Answer: E Full explanation coming soon. Send us a note if you’d like this added to the express queue! You’ll find tons

In the xy-plane, the origin O is the midpoint of line segment PQ. If the coordinates of P are (r,s), what are the coordinates of Q? Read the Full Article »