Name_____________________________________________
Date_____________________
W ORKSHEET 9.7
Find the scale factor. Tell whether the dilation is a reduction or an enlargement.
1.
2.
Simplify the product.
3.
2[
−4 3 2
]
1 7 0
4.
6
[
3 12
2
−9 0
]
4.5 −6
5.
0
−3 [
1
−11 −2
]
8
7
Graph the image that represents a dilation of the polygon centered at the origin with the given scale
factor. Be sure to graph the polygon and its image.
𝟏
6. 𝑨(−𝟔, 𝟐), 𝑩(−𝟒, 𝟒), 𝑪(−𝟐, 𝟐); 𝒌 = 𝟐
7. 𝑨(−𝟑, −𝟐), 𝑩(−𝟐, 𝟏), 𝑪(𝟎, 𝟑), 𝑫(𝟑, 𝟒); 𝒌 = 𝟐
The vertices of ∆ABC are A(1, 2), B(5, 4), and C (7, 1). Graph the triangle and its image after a
composition of the transformations in the order they are listed.
9. Translation: (x, y) → (x – 7, y)
Dilation: centered at the origin with a scale factor of 2
1
10. Dilation: centered at the origin with a scale factor of
2
Reflection: in the x-axis