Pls answer fast and no links or I’ll report

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

What is the factored form of the following expressions? d^2 – 13d + 36

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