Overview of Coordinate Geometry
The equation of a line L is 6x = 14 - 2y.
(a) Write down the gradient of the line L.
(b) Find the equation of the line H which passes through the point (6,8) and is parallel to the line L.
(c) The point (n,-2n) lies on the line L. Calculate the value of n.
In the diagram below, Line 1 cuts the x-axis at B (0, -3), and has the same gradient as the line y=3x-4. Line 2 meets Line 1 at Point A on the x-axis.