Answer:
![(x,y)\rightarrow\ (x-8,y+4)](https://img.qammunity.org/2019/formulas/mathematics/college/7wkwtn53iu1ww53i0vi0cg996b7vnorouw.png)
Explanation:
We know that the translation rule
tells that the translation of a point (x,y) by (a,b) is given by :-
![(x,y)\rightarrow\ (x+a,y+b)](https://img.qammunity.org/2019/formulas/mathematics/college/qnfbskm5qjymlnzopfw3fvss6r67vcjlic.png)
Given statement :A triangle on a coordinate plane is translated according to the rule
.
Then, the another way to write this rule will be:
![(x,y)\rightarrow\ (x+(-8),y+(4))\\\\(x,y)\rightarrow\ (x-8,y+4)](https://img.qammunity.org/2019/formulas/mathematics/college/vtzbkbapai7opqdhgktpqgwtxwu24kiez5.png)