Evaluate And Graph Polynomial Functions (Page 4 of 4) in pdf

Evaluate And Graph Polynomial Functions Page 4

f (x) = x

− x

− 4x

+ 4

(b)

-3

-2

-1

– 5

– 4

– 3

– 2

– 1

– 2

– 3

– 4

– 5

When you graph a polynomial function with a graphing calculator, you need to take some time to

set a good viewing window. A good viewing window shows the main features of the graph,

including:

• Intercepts

• Turning points

• End behavior

• General shape

( )

= 0.2x

− 5x

+ 38x − 97

6 (a) Graph

in the standard viewing window

f x

[-10, 10] by [-10, 10]. Make a rough sketch in the space below. How well can you see

each of the features listed above?

• Intercepts

• Turning points

• End behavior

• General shape

(b) Change the y-values of your window so that the y-intercept falls well within the interval.

shape. Find the value of the x-intercept to the nearest thousandth.

(d) Write your viewing window parameters, and make a rough sketch.

Evaluate And Graph Polynomial Functions Page 4