Answer:
70
Step-by-step explanation:
90%=9/10
63*10/9=630/9=70
You would have to add x1 + x2 and divide by 2. do the same with y1 and y2.
(1/2,-1/2)
6x-3y
3 * 2x = 6x
3 * - y = 3y
So 6x - 3y
