HELP URGENT OF GEOMETRY

Question

CD¯¯¯¯¯¯¯¯ has endpoints C and D, with C at coordinates (5,8). CD¯¯¯¯¯¯¯¯ has midpoint M at (3,9). What are the coordinates of point D? Enter your answer as an ordered pair, formatted like this: (42, 53)

Answer 1

Answer: point D (1,10)

Explanation: Graph C (5,8)

Graph M midpoint (3,9)

Between C and M is 2 points left and 1 point up, which would be half way to point D, since it's the midpoint

Therefore, point D would be the same distance from M - 2 points left and 1 point up, which is point (1,10)

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10 I `D

9 I `M

8 I `C

7 I

6 I

5 I

4 I

3 I

2 I

1 I

0 I_________________________________.>

0 1 2 3 4 5 6 7 8 9 10