If x is an independent variable and we have the linear equation y=-7-6x, what is the correct function notation representation of this equation?

Quadrilateral wxyz is on a coordinate plane. segment yz is on the line x+y=7 and segment xw is on the line x+y=3. which statement proves how segments yz and xw are related

Ineed me i stuck and i don’t want to get it wrong

Jane moves from a house with 71 square feet of closet space to an apartment with 45.44 square feet of closet space. what is the percentage decrease of jane’s closet space?