They would have to have opposite slopes. ex: Y=2x+4 | Y=-1/2x+8 or if you are asking in general you could write. LINE AB | LINE CD
The answer is 12. 16 divided by 4 is 4. 4 x3 is 12
44+(-19)=25
Reasoning: Just subtract 19 from 44 resulting in 25.
ANSWER: 25
Y = 7/2 and Y = 5. Hope this helped!
The solution is y= -5 and x=10