# What is the basic difference between the lines y = x and y = -x?

##### 1 Answer

Mar 23, 2018

See explanation

#### Explanation:

Consider

The count of

This number 1 is the slope (gradient) which is the amount of up or down for 1 along reading left to right on the x-axis.

As the vertical position increases (positive direction) the slope is upwards

Consider

In this case the the vertical position decreases (negative direction) the slop is downwards.