But in the first statement, it doesn't state point Q is on the X axis. Therefore, there is no way we can assume the area is greater than 48. Please explain. Thank you!
You're right that this isn't stated. However, the diagram in the OG clearly makes it look like point Q is on the x axis. You're absolutely right that we need to be careful about making assumptions based on a diagram - but when it looks like a point is on a certain line, we can assume that that is the case! In other words, the GMAT writers will not confuse by drawing a point that looks like it is on a certain line, when it is actually not on that line :)
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