Answer:
The Last Option
Step-by-step explanation:
Hope This Helps! :)
I don't know about the first one but for the second one:

Answer: No solution.
Step-by-step explanation:
These lines are parallel to each other. So, they never intersect. So, they don't have solution.
Answer:
I am sorry, but that is not a question, if you ask a question about multiplying fractions then I will be happy to answer your question
Answer:1.7 its positive
Step-by-step explanation: 0,15 . 16,-12
y1-y2/x1-x2
15-(-12)= 27
0-16= 16
27/16 = 1.7