straight line graphs

• What is the term used to describe the steepness of a line?

  Gradient
• What is the y-intercept?


  Where the line meets the y-axis
• What does it mean for lines to be parallel?


  They never meet and have the same gradient
• How can you find the equation of a line from a graph?

  By identifying the gradient and y-intercept
• What is a linear graph?


  A graph that represents a straight line
• What does the term 'asymptote' refer to?


  A straight line that a graph will never meet
• What is the definition of reciprocal?


  A pair of numbers that multiply together to give 1
• What does it mean for lines to be perpendicular?


  They meet at a right angle
• What is the general form of a linear equation?


  y = mx + c
• How do you compare gradients of two lines?


  By analyzing their slopes
• What is the equation of a line given as an example in the material?


  y = 2x + 1
• What does the term 'real-life graphs' refer to?


  Graphs that represent measurable or observable phenomena
• How can you find the equation of a line from a graph?

  By determining the gradient and y-intercept
• What are the key components of the equation of a straight line?

  • Gradient (m)
  • Y-intercept (c)
  • General form: y = mx + c
• What are the characteristics of parallel and perpendicular lines?


  • Parallel lines:
  • Never meet
  • Same gradient
  • Perpendicular lines:
  • Meet at a right angle