In the coordinate plane, a triangle has vertices at (a,0), (b,0), and (x,y). If a>x>b>0>y, which of the following represents the area of that triangle?
A
(ay−by)/2
B
(ab−ay)/2
C
(by−ay)/2
D
(ay+by)/x
E
(a−b)/2y
Correct answer: C
Explanation
We must plug in the three points that satisfy y<0<b<x<a.
Source: Algebra word problems from the AQuA-RAT dataset (Ling et al., 2017), published by Google DeepMind under the Apache License 2.0.
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AQuA-RAT items are crowdsourced algebra problems, not ACT questions. They carry five answer choices in the pre-2025 ACT Mathematics style and no ACT reporting category. Useful for drilling Preparing for Higher Math content; not a substitute for a real form.
id aqua_rat:6de97049af40c8b82b6283a3a6cbb2b6
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