E-Math – Coordinate Geometry – Find Equations of Lines & Point of Intersect Source: Discovering Mathematics, Star Publishing, 2015, ex5.3, q 11

Three points A(-4,3), B(-6,-5) and C(2,1) are given. A line AD has the same gradient as the line BC and it cuts the y-axis at D.

a) Find the equation of the line BC.

b) Find the equation of the line AD.

c) Find the coordinates of D.

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