Find the scale factor of the dilation. then tell whether the dilation is a reduction or and

Which transformations could have occurred to map △abc to △a"b"c"? a rotation and a reflection a translation and a dilation a reflection and a dilation a dilation and a rotation

What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)

In a column proof the right column states your reasons