Rectangle ABCD is dilated by a scale factor of 1/2 with a center of dilation at the origin. What are the coordinates of the image of point B'?

A. (–2, 3)
B. (3, –2)
C. (–8, 12)
D. (12, –8)

Rectangle ABCD is dilated by a scale factor of 12 with a center of dilation at the origin What are the coordinates of the image of point B A 2 3 B 3 2 C 8 12 D class=

Respuesta :

A. (-2,3) because Rectangle ABCD is dilated by a scale factor of 1/2.

Answer:

The correct option is A.

Step-by-step explanation:

If a figure dilated by a scale factor of k with a center of dilation at the origin, then

[tex](x,y)\rightarrow (kx,ky)[/tex]

It is given that rectangle ABCD is dilated by a scale factor of 1/2 with a center of dilation at the origin, so

[tex](x,y)\rightarrow (\frac{1}{2}x,\frac{1}{2}y)[/tex]

The coordinates of B are (-4,6). So, the coordinates of B' are

[tex]B(-4,6)\rightarrow B'(\frac{1}{2}(-4),\frac{1}{2}(6))[/tex]

[tex]B(-4,6)\rightarrow B'(-2,3)[/tex]

The coordinates of B' are (-2,3), therefore option A is correct.