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The Graph of a Function in Vertex Form

7.15.4 The Graph of a Function in Vertex Form

7.15.4 • The Graph of a Function in Vertex Form

Cool Down

Answer questions 1 – 3 about the function f f , given by f ( x ) = ( x + 3 ) 2 − 1 f ( x ) = ( x + 3 ) 2 − 1 .

1.

What is the x x -coordinate of the vertex of the graph of f f ?

-3

2.

What is the y y -coordinate of the vertex of the graph of f f ?

-3

3.

Does the graph open up or down?

The graph opens upward. The squared term has a positive coefficient ( 1 ) ( 1 ) .