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title: Linear Equations
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## Linear Equations

A linear equation is a straight line from one point to another, which can be expressed through an equation or a graph.

The equation for a linear function is **y = mx + b**.

* _'y'_ is the y-coordinates on the slope
* _'mx'_ is the slope, or rate of which the equation is headed. This can be calculated using **(y2-y1/x2-x1)**, where the numerator is the vertical shift, while the denominator is the horizontal shift.
* _'b'_ is the y-intercept, or where the linear function meets the y-axis.