Mathematics for IGCSE & O level - Sketching Curves (Section 3 - No. 19)
What is the main advantage of using the completed square form to sketch the quadratic graph? (Select all that apply)
It helps to identify the turning point directly
It makes finding x-intercepts easier
It gives the equation of the axis of symmetry
It helps to determine if the graph opens upward or downward.
Explanation
The completed square form, y=a(x-h)²+k, clearly shows the turning point at (h,k), determines the axis of symmetry (x=h), and helps determine the direction the graph opens based on the sign of 'a'.
Comments (0)
