Answer:

Step-by-step explanation:
The scatter plot trends downward from left-> right, meaning that it is negative. Next, use two points to solve for the value for the slope.
In this case, I will use (-3 , 1) & (0 , 0)
Use the following equation. m = slope:

Let:

Plug in the corresponding numbers to the corresponding variables:

Your answer will be:

Answer:
it have no answer in real number(but it have in complex number if you know)
Step-by-step explanation:
4x^2+36=0
4x^2=-36
(if you know complex numbers see this: x^2=-9 then

)
Answer: 
Step-by-step explanation:
According to the cosine rule

Here, 
Putting values

So, the ship turns by
north of west