Connect a rule, table and rate
Interpret the fixed part and changing part of a linear function.
Open lesson 1Plan with Linear Rules
Evaluate linear models, recover them from tables, find inputs, and compare intersecting rules.
Before you begin
- Use signed arithmetic and solve a simple two-step equation.
- Read (input, output) pairs and distinguish a count from its cost.
Choose by skill rather than age alone. Read with an adult when useful, revisit a lesson, or explore another grade.
Follow the lesson sequence
Find a Linear Rule from a Table
Calculate rate over a multi-unit interval and recover the fixed part.
Open lesson 2Work Backward Through a Linear Rule
Solve a linear rule for a specified output and check its domain.
Open lesson 3Find When Two Linear Rules Agree
Solve an intersection and interpret costs on either side.
Open lesson 4Review and transfer
After the lessons, try 4 new review cases and a practical task. Each answer has an explanation and a link back to the related lesson.
Open the unit reviewGuest answers are temporary. Keep your own paper or document; this unit does not certify completion or record a school grade.