If EF = x + 1 and DF = 3x + 1, what is DF? D x + 1 E F 3x + 1 Simplify your answer and write it as a proper fraction, mixed number, or integer.

If EF x 1 and DF 3x 1 what is DF D x 1 E F 3x 1 Simplify your answer and write it as a proper fraction mixed number or integer class=