# Linear graphs

- Linear equations are in the format \(y = mx + c\)
- Coordinates are in the form (X,Y)
- Example: (3,7)

- Coordinates are in the form (X,Y)
- To find the coordinates of a line, substitute y and x
- Example:
- \(y = 2x - 1\)
- Substitute 0 as x, giving you \(y = 2 \times 0 - 1\), leaving you with \(y = -1\)
- This give you the coordinates (0,-1)
- Do this again, so you have coordinates to draw a line

- Example: