Quicksuppose a particle is moving along the x-axis. the position, measured in feet, of the particle can be modeled by the quadratic equation y = 3x2 − 12x − 9, where x is time, in seconds. what does the number −9 represent for the quadratic function?   the particle is 9 feet to the left of the origin. the particle is moving left 9 feet per second. the particle is accelerating at −9 feet per second squared. the particle has stopped at 9 seconds.

THe equation is of the form

Where c is the constant or the initial value .

In the given equation , that is

Coefficient of x square represents the acceleration, so 3 is the acceleration. Coefficient of x represents the velocity, so -12 is the velocity. And the constant , 9 shown the initial position and since its negative , so it must be to the left of the origin . Therefore the correct option is the first option .

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