In a line with points a,b,c,d what is the name of the ray that is opposite ba?

my answer is ca

To determine the name of the ray that is opposite ba in a line with points a, b, c, d, let's first understand what "opposite" means in this context.

On a line, opposite rays are two rays that have the same endpoint but extend in opposite directions. In this case, ba represents a ray that starts at point b and extends in the direction towards a. So, we need to find the ray that starts at point b and extends in the opposite direction, away from a.

To find the opposite ray to ba, we can consider point b as the shared endpoint and find another point on the line in the opposite direction. In this case, point c is the next point on the line after point b in the opposite direction.

Therefore, the ray opposite to ba would be cb (point c to point b), not ca.