Proportional Relationships Lesson: Write Equations y = kx, Grades 7-8

Once students can find k, they can write the equation. This lesson teaches y = kx in four steps: find k = y ÷ x, write y = kx with the number in place of k, say what x, y and k stand for, and check with one pair from the table.

What's inside

• 18 slides, with speaker notes on all 18
• Lesson plan, 2 pages: standards, materials, objective, a teacher-guided sequence keyed to slide numbers, a "Watch For" note and a 25-minute version
• Scaffolded notes, 1 page, fill-in to match the slides
• Practice worksheet, 2 pages: 16 items
• Exit ticket, 3 questions, two to a sheet
• Answer key, 2 pages, with the steps shown for every item
• Print-all PDF, 8 pages, the day's lesson plan, notes, practice, exit ticket and answer key in one file

Answer key included

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