Solving Quadratics Using Table and Graph

Find the roots of the quadratic by using the graph.

• x=3 , x=7

• x=-2

• No roots of any kind

• x=-7, x=-3

Does this graph in the back have maximum or minimum value?

• maximum

• minimum

• neither

• both

The function below represents the flight of a ball being thrown by a girl who is standing on a box. How long until the ball hits the ground? (Round to the nearest whole number)
y = -1/2x² + 2x + 2?

• 2 seconds

• About 5 seconds

• 0 seconds

• 4 seconds

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

The ordered pairs in the table follow a quadratic pattern. What is the missing value of y?

• 25

• 100

• 101

• 401

Given graph, find the factors.

Given the graph, identify the zeros.

Given the graph, find the factors.

Given the graph, find the zeros of this function:

Use the graph to determine the solutions.

• -1 and -3

• 1 and -3

• 1 and 3

• -1 and 3