This line crosses the point (4,5)so we can make an equation to find the slope:

hope this helps
Answer:
your slope is 1
Step-by-step explanation:
You would use the formula y2-y1/x2-x1=m you would do -12-(-9)/-6-(-9)
which would give you 3/3 which simplifies to 1.
A) Yes, the two events are independent because P(NF|PB) = P(NF).