How to use the quadratic function

Practice Questions

PSAT Math › How to use the quadratic function

Questions

If x2 + 2x - 1 = 7, which answers for x are correct?

Which of the following quadratic equations has a vertex located at $\dpi{100} (3,4)$ ?

Use the quadratic equation to solve for $\small x$ .

$\small \small \small \small x^{2} + 3x - 3 = 0$

Define function as follows:

$f(x) = x^{2} - 10x + 7$

Given that and , evaluate .

A pitcher standing on top on a 600-foot building throws a baseball upward at an initial speed of 90 feet per second. The height of the ball at a given time can be modeled by the function

$h\left ( t\right )= -16t^{2}+ 90 t + 600$

How long does it take for the ball to reach its peak? (Nearest tenth of a second)

A pitcher standing on top on a 600-foot building throws a baseball upward at an initial speed of 90 feet per second. The height of the ball at a given time can be modeled by the function

$h\left ( t\right )= -16t^{2}+ 90 t + 600$

How high does the ball get? (Nearest foot)

A pitcher standing on top on a 600-foot building throws a baseball upward at an initial speed of 90 feet per second. The height of the ball at a given time can be modeled by the function

$h\left ( t\right )= -16t^{2}+ 90 t + 600$

How long does it take for the ball to return to the level at which it started? (Nearest tenth of a second)

A pitcher standing on top on a 600-foot-high building throws a baseball upward at an initial speed of 90 feet per second. The height of the ball at a given time can be modeled by the function