D6 Intro/Review Quadratic Functions

What does "a" control in a graph of f(x) = ax²+ bx+ c?

• Opens up or down
• Where the graph crosses at X-intercept
• Where the graph crosses at Y-intercept

Quadratic equations take the shape of a _______ when graphed.

• U / Parabola

• straight line

• wavey line/snaked

• circle/elliptical

Tags

CCSS.HSF-IF.C.7A

What is the green dashed line called?

• roots or x-intercepts

• parabola

• axis of symmetry

• y intercept

Tags

CCSS.HSF-IF.C.7A

What is the vertex?

• (5,2)
• (2,5)
• (-2,5)
• (-5,2)

When I want to find the maximum or minimum height of an object, I should_____.

• Look at the x intercepts

• Look at the axis of symmetry

• Look at the y intercept

• Look at the y-coordinate for the vertex

• Look at the x-coordinate for the vertex

What does the y value of the vertex of the graph represent?

• The initial speed the bungee jumper is falling.

• The initial height of the bungee jumper

• The lowest point the bungee jumper falls before bouncing upwards.

• The bungee jumper's final height.

Does this parabola have a minimum or maximum and what is its value?

• minimum: 2
• maximum: 2
• minimum: 5
• maximum: 5

Which one are we looking for?

Elliot 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

• zeros/roots/x intercepts

• y-intercept

• 2

• 3

• 6

• -6

Tags

CCSS.HSF-IF.C.7A

What are the coordinates of the y-intercept?

• (-3, 0)
• (0, -3)
• (2, 1)
• y=-3

Tags

CCSS.HSF-IF.C.7A