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Rectangular shape related questions in linear equations

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Foundations of Mathematics, Grade 10, Applied (MFM2P)
2. Modelling Linear Relations
6. 3.1 Solving and Interpreting Systems of Linear Equations
6.4 Rectangular shape related questions in linear equations

Rectangle Word Problems

Set up rectangle word problems by naming the width, expressing the length in terms of it, and solving the perimeter equation.


What You'll Learn

Name the width as the unknown, usually w.
Express the length algebraically in terms of w.
Use the perimeter formula P = 2(width + length).
Solve the resulting linear equation for w, then find the length.
Area word problems use the same naming but give a quadratic equation instead.

What You'll Practice

1

Setting up perimeter equations from rectangular word problems

2

Solving for dimensions using substitution with height-width relationships

3

Working with decimal values in geometric measurement problems

Why This Matters

Understanding how to model rectangular shapes with linear equations is essential for real-world applications like construction, design, and space planning. This skill bridges geometry and algebra, preparing you for advanced problem-solving in physics, engineering, and everyday projects.

This Unit Includes

1 Video lesson
Practice exercises
Learning resources

Skills

Linear Equations
Perimeter
Substitution Method
Word Problems
Rectangular Geometry
Systems of Equations
Algebraic Modeling
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