To find where the graph crosses the \(y\)-axis, work out \(y\) when ... point and the equation of the line of symmetry can be found by completing the square for the quadratic equation.
The coordinates of the turning point and the equation of the line of symmetry can ... will cross the \(y\)-axis at (0, -3) Writing \(y = x^2 – 2x – 3\) in completed square form gives \(y ...
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