Scale Factor and Dilations
2 years ago
stearnslhjh
Save
Edit
Host a game
Live GameLive
Homework
Solo Practice
Practice
• Question 1
30 seconds
Q. What is the scale factor in the algebraic representation
(x,y) to (2x,2y)
k=2
k=1/2
k=2.2
k=0.5
• Question 2
30 seconds
Q. What variable represents scale factor in the algebraic representation (x,y) to (kx,ky)?
x
y
z
k
• Question 3
300 seconds
Q. What is the scale factor from the small shape to the big shape?
1/2
7/3
2
10/3
• Question 4
30 seconds
Q. Sides that are in the same position are called
Corresponding Sides
Corresponding Angles
The Same
Congruent Sides
• Question 5
180 seconds
Q. If the scale factor is less than one, the new figure will be
an enlargement
a reduction
a scale factor
bigger
• Question 6
180 seconds
Q. If the scale factor is greater than one, the new figure will be
a reduction
an enlargement
a scale
not proportional
• Question 7
180 seconds
Q. What is the scale factor from ΔDEF to ΔABC?
1/2
7/3
2
10/3
• Question 8
180 seconds
Q. What is the scale factor from ΔDEF to ΔABC?
2
3/2
2/3
1/2
• Question 9
120 seconds
Q. Which is an example of a reduction?
k = 1/2
k = 1
3:2
250%
• Question 10
120 seconds
Q. Which is an example of an enlargement?
k = 1/2
k = 1
2:3
2.5
• Question 11
300 seconds
Q. The point (8, 12) was dilated to become point (2, 3). What was the scale factor?
½
¼
4
2
• Question 12
300 seconds
Q. What is the definition of dilations in mathematical terms?
to make larger or smaller
to make larger
none of the above
to make smaller
• Question 13
30 seconds
Q. How do you write the algebraic notation when the scale factor is 1/2?
(x, y) goes to (2x, 2y)
(x, y) goes to (1/2x, 1/2y)
(x, y) goes to (-2x, -2y)
(x, y) goes to (2x, 1/2y)
• Question 14
30 seconds
Q. In a dilation what mathematical operation is used with the scale factor?
subtraction
multiplication
division
• Question 15
60 seconds
Q. Which of the following is the algebraic representation for a dilation?
(x, y) → (x, 3y)
(x, y) → (3x, 3y)
(x, y) → (x, y - 3)
(x, y) → (.5x, .4y)
• Question 16
30 seconds
Q. A dilation produces a similar figure
True
False
• Question 17
30 seconds
Q. A dilation produces a congruent figure
True
False
D
• Question 18
30 seconds
Q. If the scale factor is greater than 1, the new figure will be
an enlargement
a reduction
a scale factor
bigger
• Question 19
30 seconds
Q. If the scale factor is less than 1, the new figure will be