HURRY PLEASE I NEED HELP A system of equations is given below.
y= - 3/4x - 3
y= 3/4x + b
What value of b would cause this system to have an infinite number of solutions?

When a 757 passenger jet begins its descent to the ronald reagan national airport in washington, d.c., it is 3900 feet from the ground. its angle of descent is 6 degrees. how far must the plane fly to reach the run way? a. 37,106 ft b. 37,310.4 ft c. 23,456.6 ft d 2,492.7 ft