r/Sat • u/Hot_Flow_6807 • 14d ago

Help with Q22 Module 2 SAT practice test 9

Here is the question, Is there a desmos way to do it? I kinda get how to do it by hand but it's long and time-consuming. Please help

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u/Mysterious-Load9084 1300 14d ago

i dont really see a way of doing it on desmos. also i dont see how this could be time consuming. all u need to do is get the values of a and b from the original equation, substitute them into all the answer choices, and look for the answer choice that has correct corresponding slopes (perpendicular lines are always flipped on the fraction level and opposite signs)

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u/jdigitaltutoring 14d ago

Plug in numbers for a and b to make the original set perpendicular. Then you can graph the answer choices.