Answer:
To translate triangle ABC 3 units up, we need to add 3 to the y-coordinate of each vertex:
A = (-3, 3 + 3) = (-3, 6)
B = (0, 7 + 3) = (0, 10)
C = (-3, 0 + 3) = (-3, 3)
Therefore, the coordinates of the vertices for the image triangle A'B'C' are A(-3, 6), B'(0, 10), and C(-3, 3).
So the correct answer is: A(−3, 6), B(0, 10), C(−3, 3).