Learning objectives
Use coordinates in two dimensions and draw straight-line graphs from their equations, using a table of values where needed
Find the gradient of a straight line from its graph, and at Extended from the coordinates of two points on it
Calculate the length of a line segment and the coordinates of its midpoint from the coordinates of its end points (Extended)
Interpret and obtain the equation of a straight line in the form y = mx + c from its graph or from its gradient and a point, and at Extended from two points
Find the gradient and equation of a line parallel to a given line
Find the gradient and equation of a line perpendicular to a given line, using the product of gradients −1 (Extended)
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