B is your answer. Just count it. That’s if black goes to blue.
Answer:
3) y = 2
Step-by-step explanation:
Step : 1
given 2 y-1 =3
Adding '1 ' on both sides, we get
2 y -1 +1 = 3+1
2 y = 4
dividing by '2' on both sides, we get

cancelling '2' on both sides, we get
y = 2
The answer is 3√5. You use the distance formula: √((x2-x1)^2+(y2-y1)^2)