How do i find the slope in an equation?

Determine which postulate or theorem can be used to prove that lmn =nmo

Alina fully simplifies this polynomial and then writes it in standard form. xy2 – 2x2y + 3y3 – 6x2y + 4xy2 if alina wrote the last term as 3y3, which must be the first term of her polynomial in standard form? xy2 5xy2 –8x2y –2x2y

Arestaurant added a new outdoor section that was 8 feet wide and 6 feet long. what is the area of their new outdoor section