GRADE 8 MATH · CHAPTER 3
Algebra & functions
Study each lesson in order, or choose the idea you need today.
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Expressions & equations
Solve equations with variables on both sides
Use equivalent transformations to solve a linear equation with variables on both sides.
Linear relationships
Find slope from two points
Divide vertical change by horizontal change using consistent point order.
Linear relationships
Solve a pair of linear equations
Find and check the ordered pair that satisfies two linear equations.
AN EXAMPLE FROM THIS CHAPTER
Solve: 5x + 3 = 2x + 15. What is x?
Show answer & explanation
4
Subtract 2x and 3 from both sides: 3x = 12. Divide by 3, so x = 4.
Curriculum & source notes
These are original Little Play study books organized around U.S. school topics. The official curriculum references below guide topic scope and progression. Coverage is selected, not a complete curriculum or a verified match to every state standard. They are not copies of a publisher’s textbook. Check your school’s syllabus and book edition.
High-school courses can be taken in different years. Choose the topic that matches the student’s current course.
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