GC-Algebra I Lesson 13-18

 LESSON 13 Solving Word Problems with Linear Equations 

LESSON 14 Linear Equations for Real-World Data

終於明白conversion 32, 5/9 是如何來的 

不用寫用 linear equation 勻速運動就解決了問題。height/ speed = time.

LESSON 15 Systems of Linear Equations, Part 1

LESSON 16 Systems of Linear Equations, Part 2 

Based on these 3 principles.

LESSON 17 Linear Inequalities 

LESSON 18 An Introduction to Quadratic Polynomials