Question

if the ordered pair (x , -7) and (10, 2y) belongs to the set {a,b): b= 3a - 4}, find x+y

Answer 1

Answer:12

Step-by-step explanation:

Answer 2

Answer:

b=3a-4...when a=x, then -7=3x-4 or 3x=-7+4=-3 or x=-3/3=-1 again b=3a-4 or 2y=30-4=26 or y=26/2=13...thus x=-1, y=13