To find the scale factor use the next formula:
[tex]sf=\frac{dimension\text{ }new\text{ }shape}{dimension\text{ }original\text{ }shape}[/tex]
Use dimension of corresponding sides AB and ED:
[tex]sf=\frac{2}{4}=\frac{1}{2}[/tex]
Then, the scale factor is 1/2
___________
After the dilation the figure is reflected across the y-axis
_____________
Then, the triangle is translated one unit to the right and 3 units up [+1,+3] or [1,3]
