Answer:
Assuming that
is a diameter.
Given that 
And that point O is the center of the circle

Explanation:
Because angle AOB is subtended by arc AB from point O.
Arc AB is equal to the measure of that angle.
Since arc ABC is subtended by the diameter, the arc is 180°.
Answer:
x = (y-b)/m
Step-by-step explanation:
Is there supposed to be an attachment to this question?
It would be x^+_6+2 and i think that would be it
Step-by-step explanation: (-2,-4)