What is the slope-intercept equation of the line below

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Find the value of x for which the lines are parallel.

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