Mathematics for IGCSE & O level - Sketching Curves (Section 5 - No. 21)
What is the equation of the line of symmetry for the graph of \(y = x^2 - 6x + 10\) after it has been rewritten in completed square form?
x = -3
x = 3
y = -3
y = 3
Explicació
The line of symmetry is given by the value of x where the minimum value of the quadratic function occurs. This is derived from the completed square form, which indicates the x-coordinate of the turning point.