Sec 3/4 E Math T01-Q16 - Sketching a quadratic graph

Sec 3/4 E Math T01-Q16 - Sketching a quadratic graph

Secondary 3
Original parallel to Sec3&4 E Math FA

On the grid provided below, sketch the graph of \(y=(x-2)(x+2)\).

  1. Indicate clearly the coordinates of the points where the graph meets the coordinate axes and the turning point.
  2. State the minimum value of \(y\).

Solution:

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Answer:(a) intercepts \((-2,0)\), \(( 2,0)\), \((0,-4)\); turning point \(( 0,-4)\); (b) \(-4\).

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