Can someone me on this and explain what most of what to do

Determine if the equation defines y as a function of x: 2xy = 1. yes o no

The area of the map is the product of the length and width. write and expression for the area as the product of the two binomials do not multiply

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14