Help asap!! will get branliest.

m∠x = 55°

Step-by-step explanation:

Since line a is parallel to line b, m∠R = m∠P due to Alternate Interior Angles. If that is the case, we simply subtract 65 from 120 to get 55° as our answer.

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

i think it will be zero as slope has a formula of difference between initial and final distance divided by itz time interval