Which of the following equations belongs to the quadratic function family? y = 7.2x - 15; y = 1.2 * (2) ^ x - 8; y = 7 * (x + 3.5) ^ (1/2); y = 2 * (x + 1.5) ^ 2 - 55
1 answer
The equation that belongs to the quadratic function family is y = 2 * (x + 1.5) ^ 2 - 55. This equation is in the standard form of a quadratic function, which is y = ax^2 + bx + c.