When Cover-Up Fails
When an inequality has no constant term (line passes through origin) or only one variable (horizontal/vertical line), switch from the cover-up method to slope-intercept form or recognize the constant-line shortcut.
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Feynman technique
Learn with the Feynman Technique
Explain each idea in your own words in handwriting, then upload a photo for AI critique. Two attempts per question — there's no "right" answer, only depth of understanding.