(-3, 1.5)....simply add the x coordinates together, divide them by two, and then do the same for the y coordinates.
13, because 78 postcards divided by 6 cards per board = 13 poster boards
Answer:
Y=2×+13
Step-by-step explanation:
2×+3=0
2×=0-3
you use 3 to divide it self =×
×=3
