Akitchen measures 3.75 meters by 4.2 meters, wha is tye area of the kitchen

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Solve by any method (graphing, substitution or linear combination)y = x - 82x + 3y = 1a) (2, -6)b) (5, -3)c) (4, -4)d) (0, -8)i figured it out. the answer is (5, -3)

Could someone with number 1 and 2