Answer:

Step-by-step explanation:
Lines form 180 degrees on either side. The negative sign simply implies direction (clockwise instead of counter-clockwise), which is negligible as 180 is exactly half of 360 so you'd form the same line.
Answer:
-12/3
Step-by-step explanation:
The formula to get slope is m=y1-y2 and x1-x2
REMEMBER SLOPE IS Y/X NOT X/Y
<span> b4 + b3 - 45b2 - 27b + 25
—————————————————————————
b2 </span>
Step-by-step explanation:
Hey there!!
Given,

Cross multiply.
15 = 2z
Therefore, z= 15/2
<em><u>Hope it helps</u></em><em><u>.</u></em><em><u>.</u></em>