Write the equations for the x–and y–axis.

Explanation

To write the equations for the x-axis and y-axis, we can follow these steps:

### Step 1: Understand the Axes
The x-axis is the horizontal line on the Cartesian coordinate system, and the y-axis is the vertical line.

### Step 2: Equation of the Y-Axis
The y-axis is defined by the condition that the x-coordinate is always 0. Therefore, the equation for the y-axis is:
\[
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