Respuesta :

Answencer:

Recall that a line has equation

       y  =  mx + b  

Suppose that one airplane moves along the line

       y  =  2x + 3

while the other airplane moves along the line

       y  =  3x - 2n:

Answer:

x=t, y=-9t-1

Step-by-step explanation:

9x+y=-1

9t+y=-1           Substitute t for x.

y=-9t-1            Solve for y by subtracting -9t from both sides.