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Algebra Difficulty 3.0 AMC 10/12 Prove it Canada

On the grid provided in the answer booklet, sketch $y=x^2-4$ and $y=2|x|$ .

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Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.