Linear graphs

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