This worksheet illustrates features of straight lines including equation and gradient of a straight line as well as mid-point and length of a line segment.

By hiding various features and moving the points A and B you can generate questions based around this subject knowledge and easily test your answers by revealing the hidden features.[br][br]Example:[br]- Hide everything apart from points A and B. Move points A and B to a chosen location. What is the mid-point of AB? How long is AB?[br]- Display only the gradient and the mid-point. Give an example of the possible coordinates of A and B.[br]- Display only B and M. What are the coordinates of A?