Can someone help me or explain how to find the missing value from the simple interest?

Iwill make brain if you me correctly fill this out needs due today pls and send it back to me (click the link and you will get it)

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

Problem situation: caren is making rice and beans. she can spend no more than $10 on ingredients. she buys one bag of rice for $4.99. beans cost $0.74 per pound. how many pounds of beans, x, can she buy? inequality that represents this situation: 10≥4.99+0.74x drag each number to show if it is a solution to both the inequality and the problem situation, to the inequality only, or if it is not a solution.