Question

The point A(7,4) is dilated from the origin by a scale factor r = 3. What are the coordinates of point A’?\A. (21, 12)B. (7, 12)C. (21, 4)D. (4, 7)

Answer 1

We are given a point A(7,4) and ask to find its image under a dilation of factor of r=3 from the origin. To find its image, we simply multiply each coordinate by the scale factor. So we get that the new point would be

`(7\cdot3,4\cdot3)=(21,12)`

so the correction option is option A