After the translation 4 units down
The rule of translation is (x, y) to (x , y-4)
The graph will be as following
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For the graph of the triangle:
D = ( 4 , 0) , B = (6 , -2) and C = ( 10 , -2)
it is required to graph after translation 7 units left and 8 units up
So, for each point add ( -7 , 8 )
So,
D' = ( -3 , 8) , B' = (-1 , 6 ) and C' = ( 3 , 6)
the graph will be as following: