Author note — to cover

Identify parallel lines from equal gradients in y = mx + c, including after rearranging, and write the equation of the line parallel to a given one through a given point. Both tiers — the A9 braces cover only perpendicularity, which is the Higher sibling page. (A9)

• Fluency — direct questions on parallel lines, limited to this lesson's stated scope (4 questions).
• Application — use the same skill in unfamiliar or contextual questions without introducing a later method (4 questions).
• Check — questions built around the exclusions and likely misconceptions named in the lesson brief (4 questions).