Question

Two similar triangles below are shown on the coordinate grid:

Which set of transformations has been performed on triangle MNO to form triangle M′N′O′? Dilation by a scale factor of 2 followed by reflection across the x-axis Dilation by a scale factor of fraction 1 over 2 followed by reflection across the x-axis Dilation by a scale factor of 2 followed by reflection across the y-axis Dilation by a scale factor of fraction 1 over 2 followed by reflection across the y-axis

Answer 1

We know that the vertices of a figure (x,y) after dilation with scale factor k will become (kx,ky). i.e. Hence, the set of transformations has been performed on triangle MNO to form triangle M'N'O': Dilation by a scale factor of fraction 1 over 2 followed by reflection about the y-axis.

Explanation: