What is the equation of the blue line?
The answer y = 3x-7 / y = 3(x-4)+5 is wrong

y = 4x -3

Step-by-step explanation:

Here, we want to get the equation of the blue line

As we can see, the y-intercept is -3

So we have the equation as;

y = mx -3

To get the value of m which is the slope , we check for any point on the line

That would be;

(1,1)

Let us have this substituted;

1 = m(1) - 3

1 = m -3

m = 1 + 3

m = 4

so the equation of the straight line is;

y = 4x -3

Thank you for posting your question here at . I hope I would be able to help you with this question.

This problem is about vectors. You can solve this by manually drawing a force body diagram. However, I'm going to present an easier solution by using a scientific calculator using the complex mode. Just input these:

150<30 + 75<150

Then convert to answer in the form of r<theta. The answer would be 215.51<-69.5.

Thus, the resultant magnitude force is 215.51 lbs and the direction is 69.5 degrees to the southeast, since in the cartesian plane, -69.5 degrees is located in the 4th quadrant.