Linear Functions, Graphs & Gradient

• Always read the x-axis before the y-axis
• *If the question ask to "use your graph", read off the graph. If you used an equation to solve the question, 0 marks
• Gradient - Vertical Change ÷ Horizontal Change
• • Upwards - Positive, add 1
  • Downwards - Negative, minus 1
  • Gradient of horizontal line - 0
  • Gradient of vertical line - Undefined
  • Always start from the left side
• y = m (gradient) x + c (y-intercept)