A line segment is 5.6 units long and has one point at (5.1, 6.3). The sum of the coordinates of the unknown endpoint is 15.3. Which of the following coordinates is the other endpoint of the line?
a. (-0.3, -2.1) | ||
b. (-3.3, 18.6) | ||
c. (2.5,12.8) | ||
d. (3.6, 11.7) |