It is given that the translation i s (x+3,y-4) so it follows:
[tex]P(0,0)\Rightarrow P^{\prime}(0+3,0-4)=P^{\prime}(3,-4)[/tex]Similarly for the points Q and R, it follows:
[tex]\begin{gathered} Q(-1,2)\Rightarrow Q^{\prime}(-1+3,2-4)=Q^{\prime}(2,-2) \\ R(-7,-4)\Rightarrow R^{\prime}(-7+3,-4-4)=R^{\prime}(-4,-8) \end{gathered}[/tex]