The coordinates of triangle symbol DEF are Upper D left parenthesis 3 comma 4 right parenthesis​, Upper E left parenthesis 7 comma 4 right parenthesis​, and Upper F left parenthesis 5 comma 9 right parenthesis. If you translate triangle symbol DEF 3 units left and 2 units up​, what are the coordinates of Upper Eprime​?

To find the coordinates of E', we will simply subtract the translation values from the original coordinates of E.

Original coordinates of E: (7, 4)
Translation: 3 units left and 2 units up
New coordinates of E': (7 - 3, 4 + 2)
New coordinates of E': (4, 6)

Therefore, the coordinates of E' are (4, 6).