Scale Factors

If the scale factor is greater than one, the new figure will be

• a reduction

• an enlargement

• a scale

• not proportional

Tags

CCSS.8.G.A.3

Robbie made a scale drawing of a neighborhood park. A soccer field in the park is 14 inches long in the drawing. The actual field is 98 yards long. What is the scale of the drawing?1 inch = _ yards

• 1372

• 5

• 14

• 7

Tags

CCSS.7.G.A.1

What is the scale factor if the triangle on the left is the original?

• 2

• 3/2

• 2/3

• 1/2

Tags

CCSS.7.G.A.1

If the scale factor is less than one, the new figure will be

• an enlargement

• a reduction

• a scale factor

• bigger

Tags

CCSS.8.G.A.3

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

scale factor = _______

Mathematical Equivalence

ON

Tags

CCSS.8.G.A.3

what is the length of x?

• 9mm

• 4mm

• 4/9mm

• 36mm

Tags

CCSS.7.G.A.1

Match the following dilations by a scale factor of 1/2.

• (5,1)

• (10,2)

• (0,0)

• (0,0)

• (0, -5)

• (-6,-8)

• (3,4)

• (6,8)

• (-3, -4)

• (0, -10)

Answer explanation

Note that 0/2 is still 0

so (0,0) dilated by 1/2 is still at (0,0)

(0,-10) dilated by a 1/2 is at

(0, -5)

Tags

CCSS.8.G.A.3

The distance between two cities on a map is 4.125 inches.  Find the actual distance if the scale on the map is 2 inches = 40 miles.

• 165 miles

• 50 miles

• 82.5 miles

• 41.25 miles

Tags

CCSS.6.RP.A.3B

Scale Factor of 5 is _________________ .

• Reduction

• Enlargement

Tags

CCSS.8.G.A.3

On a map, Memphis, Tennessee, and Jackson, Mississippi, are 5 inches apart. The distance between the cities is actually 210 miles.

What scale was used to create the map?

• 42 inches = 1 mile

• 1 inch = 42 miles

• 40 inches = 1 mile

• 
  1 inch = 40 miles

Tags

CCSS.7.G.A.1