# Further explanation

Gradients |
UPHILL is POSITIVE |

DOWNHILL is NEGATIVE |

But you don’t need to remember this because it becomes obvious when you start to measure from the left hand side.

**Example**

Work out the gradient of the following straight lines.

Where do we start from?

`Gradient\ (m)=(y(chang\e\ i\n))/(x(chang\e\ i\n)`

`Gradient\ (m)=6/2=3`

**Example**

Work out the gradient of the following straight lines.

First, work out where we start from, then work out the horizontal `(x)` and vertical `(y)` points.

`Gradient(m)=(y(chang\e\ i\n))/(x(chang\e\ i\n)`

`Gradient(m)=(-5)/2=-2.5`