Question

Geometry Help needed ive completed part of it but I think its wrong can you check it and then help on the last part please!!!

Answer 1

1) midpoint of AB (point D)
x = (20+4)/2 = 24/2 = 12
y = (25+5)/2 = 30/2 = 15
answer D (12,15)..........your answer is correct

2)
slope CD = (15-6)/(12-30) = 9/(-18) = -1/2
answer
-1/2 ..........your answer is correct

3)
equation of CD
slope = -1/2

equation in point slope form: y − y1 = m(x − x1)

using point C (30, 6)

y - 6 = -1/2(x - 30)


4) what is the option for CD?