Mathematics
Grade 8
15 min
Dilations: graph the image
Dilations: graph the image
Tutorial Preview
1
Dilate triangle ABC with vertices A(1,2), B(3,1), C(2,3) by a scale factor of 2, centered at the origin.
2
Dilate square DEFG with vertices D(2,4), E(6,4), F(6,8), G(2,8) by a scale factor of 1/2, centered at the origin.
3
Triangle PQR has vertices P(2,1) and Q(4,1). Its image P'Q'R' has vertices P'(6,3) and Q'(12,3). What is the scale factor?
Sample Practice Questions
Easy
Point A is at (2, 3). What are the coordinates of A' after a dilation with a scale factor of 2, centered at the origin?
0.(4, 6)
1.(4, 5)
2.(2, 5)
3.(0, 1)
Easy
Point B is at (1, 4). Find the coordinates of B' after a dilation with a scale factor of 3, centered at the origin.
0.(4, 7)
1.(3, 12)
2.(1, 7)
3.(4, 1)
Easy
Point C is at (4, 6). What are the coordinates of C' after a dilation with a scale factor of 1/2, centered at the origin?
0.(2, 3)
1.(4.5, 6.5)
2.(8, 12)
3.(2, 6)
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