Comparing and Scaling Unit Test Practice

There are 75 pretzels in a 15-ounce bag of chocolate-covered pretzels. Write and solve a proportion that you can use to find the number of chocolate covered pretzels in a 10-ounce bag.

The local Farm Market sells peppers at five for $1.75. What is the constant of proportionality?

There are 75 pretzels in a 15-ounce bag of chocolate-covered pretzels. How many ounces does each pretzel weigh?

There are 75 Sour Patch Kids in a 15 oz bag. Which proportion is written correctly so that you can find the number of Sour Patch Kids in a 7 oz bag?

• A

• B

• C

The transformation of triangle T to triangle T' is shown. Triangle T is _______ to triangle T' and its scale factor is ________.

In the figure above, a dilation from A to A' has occurred. What is the scale factor?

Mathematical Equivalence

ON

The image shows​​ (a)   and the scale factor is​​ (b)   ​

• an enlargement

• 3

• a reduction

• 5

• 4

• 2

In the figure above, a dilation from A to A' has occurred. What is the scale factor?

scale factor = _______

Mathematical Equivalence

ON

The table describes two dilations with the center of dilation at the origin. Which rule describes each dilation?

The blue triangle is the preimage, the green triangle is the image.

The image shows​​ (a)   and the scale factor is​ (b)   ​

• an enlargement

• 2

• a reduction

• 5

• 4