Divide 6 by -1. Remember that -y is really -1y.
Answer: (-0.5, 4)
Step-by-step explanation:
Midpoint formula: 
(x1, x2)=(2, -3)
(y1, y2)=(2, 6)
-----------------------------------------------

=
=
=
Hope this helps!! :)
Please let me know if you have any question or need further explanation
Answer:
yes
Step-by-step explanation:
sorry if it's wrong
Answer:
m∠1 = 100°
Step-by-step explanation: