直線のグラフ
座標平面と直線についての六つの単元です。順序対の点のとり方、表や切片を使った方程式のグラフのかき方、yの増加量÷xの増加量としての傾き、y = mx + b、直線の式の求め方、二つの直線が交わる点を見て連立方程式を解く方法を学びます。各単元には、ドラッグして試せるグラフラボがあります。
進み具合
このコースの出典 (6)
- OpenStax, Elementary Algebra 2e , chapter 4 Graphs: 4.1 Use the Rectangular Coordinate System (quadrants numbered from the upper right, counterclockwise; ordered pairs: openstax.org/books/elementary-algebra-2e/pages/4-1-use-the-rectangular-coordinate-system)
- 4.2 Graph Linear Equations in Two Variables, 4.3 Graph with Intercepts, 4.4 Understand Slope of a Line (m = rise/run, horizontal 0, vertical undefined, roof pitch, road grade as a percent, wheelchair ramp 1-inch rise per 12-inch run: .../pages/4-4-understand-slope-of-a-line)
- 4.5 Use the Slope-Intercept Form (x + 2y = 6, F = 9/5 C + 32, parallel lines same slope, perpendicular slopes multiply to −1: .../pages/4-5-use-the-slope-intercept-form-of-an-equation-of-a-line)
- 4.6 Find the Equation of a Line (point-slope form: .../pages/4-6-find-the-equation-of-a-line)
- 5.1 Solve Systems of Equations by Graphing (3x − y = 7, x − 2y = 4 and (2, −1); consistent, inconsistent, independent, dependent, coincident lines: .../pages/5-1-solve-systems-of-equations-by-graphing)
- MacTutor, University of St Andrews, René Descartes biography (La Géométrie, published at Leiden in 1637 as an appendix to the Discours de la méthode: mathshistory.st-andrews.ac.uk/Biographies/Descartes)
確認日: 2026-10-17