When we eliminate y,(by adding here), resulting equation would be:
2x - 14 =0
So, x = 7
You can find the value of y as well, by substituting the value of x,
7 - y -8 = 0
y = -1
Hope this helps!
Answer:

Step-by-step explanation:


Answer: Line R and Line P are perpendicular because they intersect at a point and create a pair of equal angles.
Step-by-step explanation:
Answer:
30
Step-by-step explanation:
The calculation is in the image