Intro to Quadratic Word Problems Day 1 Practice

Front

What part of a parabola represents the initial height of an object before it is thrown?

Back

y-intercept

Front

In the quadratic equation y=ax²+bx+c, how do you find the y-intercept?

Back

(0, c)

Front

What is the height from which a water balloon is released if its height function is h(t) = -5t² + 40t + 2?

Back

2 meters

Front

What should you do to find the height of an object after 1 second in a quadratic function?

Back

Substitute 1 in for x and solve for y.

Front

What mathematical work is needed to determine when an object reaches the ground in a quadratic function?

Back

Find the x-intercept.

Front

What does the vertex of a parabola represent in the context of projectile motion?

Back

The maximum height of the object.

Front

How do you find the x-intercept of a quadratic equation?

Back

Set the equation equal to zero and solve for x.

Front

What is the axis of symmetry in a quadratic function?

Back

The vertical line that divides the parabola into two mirror images, given by x = -b/(2a).

Front

What does the coefficient 'a' in the quadratic equation y=ax²+bx+c indicate about the parabola?

Back

It indicates the direction of the parabola (upward if a > 0, downward if a < 0).

Front

What is the significance of the y-coordinate of the vertex in a quadratic function?

Back

It represents the maximum or minimum value of the function.