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freeCodeCamp/guide/chinese/mathematics/linear-equations/index.md
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---
title: Linear Equations
localeTitle: 线性方程组
---
## 线性方程组
线性方程是从一点到另一点的直线,可以通过方程或图表来表示。
线性函数的等式是**y = mx + b** 。
* _'y'_是斜率上的y坐标
* _'mx'_是等式的斜率或速率。这可以使用**y2-y1 / x2-x1计算** ,其中分子是垂直移位,而分母是水平移位。
* _'b'_是y轴截距或线性函数与y轴相交的位置。