Zhan Ye
exam3160

Section  12.4

Find the equation of the linear function

           z = 
          c + mx + ny whose graph intersects the xz - 
            plane in the line

           z = 3  x + 4 and intersects the yz - 
              plane in the line z = y + 4.

Section  13.2

A boat is heading due the east at 25 km/
            hr (relative to the water) .  
            The current is moving twoard the southwest at 10 
           km/hr.

(a) .  
        Give the vector representing the actual movement   of the boat.

(b) .  How fast is the boat going, 
    relative to the ground ?

(c) .  
        By what angle does the current push the boat off of is due east course?