Graphing linear equations is very important in Year 10 Mathematics for a few key reasons:

1. Seeing Solutions: When students graph equations like $y = 2x + 3$, they can visually see how the numbers relate. For example, every time $x$ goes up by 1, $y$ increases by 2.

2. Finding Intersections: When students graph different equations on the same grid, they can spot where the lines cross. This crossing point shows the solution to a group of equations.

3. Real-Life Uses: Graphing helps make sense of everyday situations. For instance, it can show how profit compares to costs in a business.

In short, getting good at graphing helps students improve their math skills and solve problems more effectively.