Quadratic Applications Vertex

• 4 seconds

• -2 seconds

• -2 and 4 seconds

Which one are we looking for?

Jack wants to know how high the soccer ball will get if he kicks it straight up in the air.

• x at vertex

• y at vertex

• positive zero

Which one are we looking for?

Nancy is trying to find how many seconds it will take a golf ball to get to its highest point after being hit on the golf course.

• x at vertex

• y at vertex

• positive zero

Which one are we looking for?

Sally threw a ball in the air. Sally’s friend wanted to find out how high the ball got given that it took 1 second to get to its highest point.

• x at vertex

• y at vertex

• positive zero

Which one are we looking for?

Ray found the maximum height of a basketball thrown from half court to be 21 feet and wants to know how long it took to get there.

• x at vertex

• y at vertex

• positive zero

How do I find the time it takes to get to the highest point? (choose all that apply)

• Use the axis of symmetry formula.

• Find the x-value of the maximum of the function.

• Find the y-value of the maximum of the function.

• Find the positive zero of the function.

• Use the axis of symmetry formula, plug back into equation.

How do I find the highest point?

• Use the axis of symmetry formula.

• Find the x-value of the maximum of the function.

• Find the y-value of the maximum of the function.

• Find the positive zero of the function.

• Use the axis of symmetry formula, plug back into equation.

What is the green dot on the parabola called?

• maximum

• minumum

• roots

• zeros

Given the equation y = 3(x + 5)² - 4,

what is the vertex of the parabola?

• (5, -4)

• (-5, -4)

• (-15, -4)

• (15, -4)

Given the equation: y = -(x - 4)² - 3,

does this parabola have a maximum or minimum value?

• Maximum

• Minimum