Performing transformations

Solve the proportion.

• k=5
• k=7.2

• k=3

• k=90

What is the perimeter of A'B'C'D' after ABCD is dilated by a scale factor of 3?

• 30

• 10

• 5

• 15

How many times greater is the area of a trapezoid if its side lengths are increased by a factor of 4?

• 4 times greater

• 64 times greater

• 8 times greater

• 16 times greater

What is the simplified scale factor?

• 1/2

• 3/6

• 6/3

• 2

Jimmy and his sister each bought a plot of rectangular land to build a house. Jimmy's land was 150 ft by 100 ft. His sister's land was 75 ft by 50 ft. What is the scale factor of Jimmy's land compared to his sister's?

• 1/2 the size

• 2 times the size

• 2/3 the size

• 3 times the size

What is the term that means a number you multiply to scale a drawing.

• scale factor

• scale drawing

• unit

• scale unit

What is the scale factor of a point if it changes from (3,13) to (21,91)?

A portion of a map with cities A and B is shown. The map uses a scale of 1 inch=30 miles. You are making a map with a scale of 2 inches=15 miles. How far apart are cities A and B on your​ map?

• 10 in

• 18 in

• 12 in

• 15 in

What scale factor is used to go from rectangle ABCD to EFGH?

• 2

• 3

• 4

• .5

A television has a length of 50 in. by 21 in. A second television is similar to the first television. The second television has a length of 108 in. What is the width of the second television?

• 45.36 in

• 9.72 in

• 55.25 in

• 25.68 in