Since H is reflecting over the x-axis, the new point will be under the existing H. The x coordinate will be staying the same because the point will still be 5 spaces to the left. The y coordinate will be negative, in quadrant four.
We found the factors and prime factorization of 9 and 12. The biggest common factor number is the GCF number. So the greatest common factor 9 and 12 is 3.
