What is the slope of the equation given the points through (5,-5), slips=0

You work for a lender that requires a 20% down payment and uses the standard depth to income ratio to determine a person‘s a little eligibility for a home loan of the following choose the person that you would rate the highest on their eligibility for a home loan

What describes horizontal cross section of the right rectangle 6m 8m 5m

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