A9

A9

Plot graphs of equations that correspond to straight-line graphs in the coordinate plane; use the form y = mx + c to identify parallel lines and perpendicular lines; find the equation of the line through two given points, or through one point with a given gradient

A9-01 [Plotting Lines: Horizontal and Vertical Lines]

A9-02 [Identifying Equations of the form y = mx + c]

A9-03 [Plotting Lines: y = x - 4]

A9-04 [Plotting Lines: y = 2x - 4]

A9-05 [Plotting Lines: y = 3x - 4]

A9-06 [Plotting Lines: y = 3x - 3]

A9-07 [Plotting Lines: y = 3x - 2]

A9-08 [Identifying Parallel Lines]

A9-09 [Rearranging Equations to Identify Parallel Lines]

A9-10 [Plotting Lines: x + y = 3]

A9-11 [Plotting Lines: 2x + 3y = 6]

A9-12 [Plotting Lines: 2x - 3y = 6]

A9-13 [Finding the Equation of a Line Method 1]

A9-14 [Method 1 Examples Part 1]

A9-15 [Finding the Equation of a Line Method 2]

A9-16 [Method 2 Examples Part 1]

A9-17 [Finding the Gradient between Two Points]

A9-18 [Finding the Gradient Examples]

A9-19 [Method 1 Examples Part 2]

A9-20 [Method 2 Examples Part 2]

A9-21 [Method 1 Examples Part 3]

A9-22 [Method 2 Examples Part 3]

A9-23 [Rearranging to ax + by = c form from Method 1]

A9-24 [Rearranging to ax + by = c form from Method 2]

A9-25 [Method 1 Examples Part 4]

A9-26 [Method 2 Examples Part 4]

A9h-27 Identifying Perpendicular Lines

A9h-28 Finding Negative Reciprocals Examples

A9h-29 Show that Two Lines are Parallel

A9h-30 Show that Two Lines are Perpendicular

A9h-31 Parallel, Perpendicular or Neither?

A9h-32 Trapezium Problem

A9h-33 Finding a Perpendicular Line Method 1

A9h-34 Finding a Perpendicular Line Method 2