For addition, drag tiles onto the board, To form a group, place one tile on top of another.
Use the integer tiles to find the sum of 4 and -5.
09
O 1
O-1
0-9
Board sum: 0

Which of the following transformations will make coincide with ? a. counter-clockwise rotation 90º about a, followed by a translation 5 units to the right b. translation 5 units to the right, followed by a reflection across the y-axis c. translation 5 units to the right, followed by a reflection across the x-axis d. translation 1 unit up and 5 units to the right, followed by a reflection across the x-axis