Which of the following does not describes a dilation?

1 answer:

8 0

An Isometry does not describe a dilation. To dilate an image would be to change the size of an image, specifically by a certain amount, which is called the scale factor.

An expansion and retraction both change the size of the image, meaning that they do apply to dilation. An image is always expanded or retracted by a scale factor.

For example, if I were to double the size of an image, I would be dilating it by a scale factor of 2. If I were to retract an image to half of it's original size, I would be dilating the image by a scale factor of 1/2.

An Isometry is defined by a transformation that is invariant with respect to distance. This only means that the size and shape of the image will not change. Examples of isometries are translations, reflections, and rotations.

Therefore, with the given information, the answer must be Isometry.

You might be interested in

What is extended form for 76.429

Zanzabum

(70x10)+(6x1)+(4x1/10)+(2x1/100)+(9x1/1000)

3 0

3 years ago

What is the value of x? Enter your answer in the box.

sveta [45]

Set 40 = 5x + 10
Subtract 10 on both sides, then divide 30 by 5
x = 6

3 0

3 years ago

Read 2 more answers

Write an equation that is parallel to the line 4x - y = 2 and passes through the point (-2, 3)

sergeinik [125]

We can start from the given line's coefficients and translate the line from the origin to the given point.
4(x -(-2)) -(y -3) = 0
4x +8 -y +3 = 0

The equation of the desired line is ...
4x -y = -11

_____
For standard form line ax+by=c, any parallel line will have only a different value of c. For c=0, the line goes through the origin (0, 0). To make it go through point (h, k) we can write it as
a(x-h) +b(y-k) = 0
which is completely equivalent to
ax +by = ah +bk