Dilation of two: Starting with ΔABC you need to draw the dilation image of the shape with a center at the origin and a scale factor of two. Notice that every coordinate of the original shape has been multiplied by the scale factor, this means it has been multiplied by 2
Dilation of 1/2: This is the same as above but multiplied by 1/2 instead of 2
I hope this helped :)