Geometry, Thanks if you help!

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect