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iamjatinagrawal
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Hi Jatin,

Thanks for the quick response!

Do coordinate geometry questions come as part of Quant or only DI now? Also how here in the question did you determine that the object is a rhombus??


iamjatinagrawal
Hi Shail1905,

When solving such questions on GMAT exam, it might take a lot of time to first understand what this equation might translate into and then working out the solution. I am sharing two quick and efficient formulas for such equations which you can use to quickly get to the answer in under 30 seconds.

1. \(|x - a| + |y - b| = r \Rightarrow \text{Area} = 2r^2\)
2. \(|px - a| + |qy - b| = r \Rightarrow \text{Area} = \frac{2r^2}{|pq|}\)


As given in the question mentioned, we can see the values of p and q are \(1/4\) and \(1/2\) and \(r = 4\). Putting these values in the formula, we get

\(\frac{2(4)^2}{\frac{1}{2} \times \frac{1}{4}}\) => \(2*16*8 = 256\) Option (E). You can see for yourself by applying it in different cases of such questions.


Here are some more questions similar to the one asked above:
  1. https://gmatclub.com/forum/in-the-x-y-plane-find-the-area-in-sq-units-of-the-region-enclosed-451343.html#p3661234
  2. https://gmatclub.com/forum/in-the-x-y-plane-find-the-area-in-sq-units-of-the-region-enclosed-451342.html#p3661233
  3. https://gmatclub.com/forum/in-the-x-y-plane-find-the-area-in-sq-units-of-the-region-enclosed-451335.html#p3660947



Hope this helps!



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Shail1905
Hi Jatin,

Thanks for the quick response!

Do coordinate geometry questions come as part of Quant or only DI now? Also how here in the question did you determine that the object is a rhombus??




While coordinate geometry is tested on the GMAT, both in PS and DI under graphing or functions, I don’t think questions that require tedious math or obscure formulas, such as this one, are relevant or likely to appear on the test.
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Hi Shail1905

The question asked above would mostly come in Quant section, if at all it comes and not in DI. But the Coordinate geometry questions are asked in DI as well. Also, here are two insights using which you can make a good guess about it being a rhombus.

  • Absolute values break into 4 “cases” (± for each term).
  • Any equation of the form |something| + |something else| = constant gives a 4-sided, diamond-like figure.

Shail1905
Hi Jatin,

Thanks for the quick response!

Do coordinate geometry questions come as part of Quant or only DI now? Also how here in the question did you determine that the object is a rhombus??



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