Solving Quadratics from a Table or Graph

A raft is dropped from a helicopter 256 feet in the air above the ocean.  Its approximate height, h, after t seconds is given by the function h(t) = -16t² + 256.  How many seconds did it take the raft to hit the water? (Round to the nearest whole number)

• -4

• 2

• 4

• 8

To solve a quadratic equation using ​ (a)   , find the ​ (b)   of the function from its table.

• tables

• chairs

• charts

• boxes

• x-intercepts

• y-intercepts

• vertex

• minimum

• maximum

What is the exact solution found in this table?

• x=0

• x=-2

• x=2

• x=3

Tags

CCSS.HSF.IF.A.2

What is the approximate solution found in this table?

• 0<x<2

• 2<x<3

• 2>x>3

• x=2.5

What is the graph of x²=14x-49?

• 
• 
• 
• 

Tags

CCSS.HSF-IF.C.7A

A vertex that represents the LOWEST point on a graph is called _____

• maximum

• minimum

• vertex

• home run

Tags

CCSS.HSF-IF.C.7A

How many zeros does this parabola have? 

• 3

• 2

• 0

• 1

Tags

CCSS.HSF-IF.C.7A

What is another name for the x-intercepts of a quadratic?

• y-intercept

• Zeros

• x-axis

• They don't have another name

Tags

CCSS.HSF-IF.C.7C

What is the range of the graph?

• All real numbers

• To infinity and beyond

• y ≥ 0

• x ≥ 0

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

What is the range of the graph?

• All real numbers

• To infinity and beyond

• y ≥ -1

• x ≥ 0

Tags

CCSS.HSF-IF.C.7A