Example 2 - Vertex Formula

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a) y = 2x^2+4x 
    1. we get the a, b, c in the formula y = ax^2 + bx + c
      • a = 2
      • b = 4
      • c = 0
    2. then we plug in a, b into the formula
      • x = -b / (2a)
      • x = -4 / (2*2) = -4/4 = -1
B) y = -x^2 + 4x - 5 
    1. we get the a, b, c in the formula y = ax^2 + bx + c
      • a = -1
      • b = 4
      • c = -5
    2. then we plug in a, b into the formula
      • x = -b / (2a)
      • x = -4 / (2*-1) = -4/-2 = 2

Revision #2
Created 28 April 2023 10:53:39 by naruzkurai
Updated 28 April 2023 11:53:01 by naruzkurai