Author note — to cover

Read m and c straight from y = mx + c, including negative and fractional m and c = 0, and sketch a line from them; interpret m as steepness and c as the crossing height. Equations not yet in this form are the rearranging sibling page. Both tiers. (A9, A10)

• Fluency — direct questions on the equation y = mx + c, 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).