Topic explanation

Standard explanation

Substitute one curve into another and use real roots plus coordinate checks.

Key points

• Conic intersections
• rule
• worked example
• Conic intersections: Substitute one curve into another and use real roots plus coordinate checks.
• CONCEPT AND RULE: Substitute one curve into another and use real roots plus coordinate checks.
• METHOD: For conic intersections, identify the given information and required result. Select the matching def
• Substitute one curve into another and use real roots plus coordinate checks.
• Worked pattern: A line tangent to a conic produces a repeated root after substitution.

Labelled diagram