Show:
Terms, Definitions, T/F, Fill in the Blank
Center (0, 0)
Scale Factor
Center (0, 0). Find (x, y) of new image
Center (0, 0) Proportional or not?
Review
100
A transformation that changes the size but not the shape of a geometric figure
What is dilation?
100
Preimage: (2, 2) Image: (5, 5)
What is 2.5?
100
Preimage: (7, 2) Scale factor: 10
What is (70, 20)
100
Preimage: (7, 8) Image: (56, 63)
No
100
A relationship between two quantities in which the ratio of one quantity to the other quantity is constant.
What is a proportional relationship?
200

The fixed, starting point of a dilation.

What is center of dilation?

200
Preimage: (7, 8) Image: (56, 64)
What is 8?
200
Preimage: (3, 8) Scale factor: 5
What is (15, 40)
200
Preimage: (1, 10) Image: (10, 1)
no
200

Two variables are related to each other through the proportional relationship y = kx.  This is what the "k" stands for.

What is the constant of proportionality?

300
Describes how much larger or smaller the image of a dilation is than the pre image
What is scale factor?
300

Preimage: (6, 3) Image: (2, 1)

What is 1/3?

300
Preimage: (27, 37) Scale factor: 2
What is (54, 74)
300
Preimage: (42, 49) Image: (6, 7)
Yes
300

If Bobalina types 5 sentences in 25 minutes, this is how many minutes it takes her to type 1 sentence.

What is 1 sentence in 5 minutes?

400

True or false: dilation is the location of an image is after it is enlarged or reduced.

False

400

Preimage: (46, 37) Image: (23, 18.5)

What is 1/2?

400

Preimage: (28, 83) Scale factor: 1/2

What is (14, 41.5)

400
Preimage: (48, 336) Image: (1, 7)
yes
400

Sadie buys 4 grams of titanium for a robotics project for $11. Quin buys 2.5 grams of the same titanium for the same robotics project for $6.25. Who gets the better deal.

Quin

500
A dilation is a ________ that changes the ________ but not the shape of a geometric figure.
transformation, size
500
Preimage: (53.7, 35.8) Image: (161.1, 107.4)
What is 3?
500

Preimage: (222, 18) Scale factor: 1/3

What is (74, 6)

500
Preimage: (247, 583) Image: (1799, 4081)
Yes
500

Chocolate fudge overload extra large donuts are on sale for $5.99 3/4 dozen. This is the cost of one donut.

What is $0.67?