I need some help with some math please?

Aline passes through 3,7 and 6,9 what equation represents the line

Find solution of the linear equation y = 2/3x + 1/3

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