Lesson 1 Photocopy Faux Pas Develop Understanding

Ready

Give the factor by which each pre-image was multiplied to create the image. Use the scale factor to find any missing lengths.

1.

Scale Factor:

2.

Scale Factor:

$x =$

$y =$

$z =$

3.

Scale Factor:

$a =$

$b =$

4.

Scale Factor:

$c =$

$d =$

$e =$

5.

Scale Factor:

$n =$

$m =$

6.

Scale Factor:

$x =$

$y =$

$z =$

Set

For each real-world context or circumstance, determine the center of the dilation and an approximate scale factor or way to determine the scale factor.

7.

Fran walks backward to a distance that will allow her family to all show up in the photo she is about to take.

8.

The theatre technician plays with the zoom in and out buttons in an effort to fill the entire movie screen with the image.

9.

Melanie zooms in on a picture she has on her phone by touching with two fingers and spreading them apart until the picture is enlarged to the desired size.

10.

A digital animator creates artistic works on her computer. She is currently doing an animation that has several telephone poles along a street that goes off into the distance.

11.

Ms. Sunshine is having her class do a project with a rubber-band tracing device that uses three rubber bands.

12.

A copy machine is set at $300 %$ for making a photocopy.

Go

Determine whether the given representation is representative of a linear, exponential, or quadratic function. Classify each as such and justify your reasoning.

13.

$x$	$y$
$2$	$7$
$3$	$12$
$4$	$19$
$5$	$28$

Type of function:

Justification:

14.

Type of function:

Justification:

15.

$y = 3 x^{2} + 3 x$

Type of function:

Justification:

16.

$y = 7 x - 10$

Type of function:

Justification:

17.

Type of function:

Justification:

18.

$x$	$y$
$2$	$- 5$
$7$	$5$
$14$	$19$
$25$	$41$

Type of function:

Justification: