Texas Instruments TI-84 User Manual

Page 485

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Chapter 17: Activities

482

3.

Press

p and set

Xmin=

L

2

,

Xscl=10

,

Ymin=

L

5

, and

Yscl=10

. Ignore

Xmax

and

Ymax

; they are set by

@

X

and

@

Y

in step 4.

4.

Press

y 5 to return to the home screen. Store

1

to

@

X

, and then store

5

to

@

Y

.

@

X

and

@

Y

are on the

VARS Window X/Y

secondary menu.

@

X

and

@

Y

specify the

horizontal and vertical distance between the centers of adjacent pixels. Integer
values for

@

X

and

@

Y

produce nice values for tracing.

5.

Press

r to plot the function. At what speed does the ticket exceed 250?

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