Answer:
the y-coordinate of B′ is 6
Explanation:
We know that point B(6, -3) where:
x = 6;
y= -3;
if that point is translated to point B' we have to move as the rule given:
(x-5,y+9)
We can now substitute the variables for the values of point B, therefore we get that the new point B' is:
(x-5,y+9) = (6-5 ,-3+9) = (1,6)
So, Point B'(1,6) where the y-coordinate is 6.