Mixed module checkpoint

Assess conic-section understanding with a mixed precalculus checkpoint. These fresh problems require independent method selection across distance loci, circle constraints, ellipses, hyperbolas, rotated coordinates, polar models and intersections. Single-select and multiselect tasks blend transfer, error diagnosis and exact calculation without teaching labels in the stems. Attempt the set without notes, then use the detailed explanations and topic referrals to guide targeted practice. This checkpoint samples the extension module; a score alone does not establish full mastery.