Find the missing side lengths and angle measures

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

What is the equation of the line that passes through (-3,-1) and has a slope of 2/5? put your answer in slope-intercept form

22 points algebra 1//sum and product of rational and irrational numbers. dont have to do all 4 if could much : )) write an example: 1) how the product of two identical irrational numbers can be a rational number. 2) how the product of two different irrational numbers can be a rational number. 3) write a quotient of intergers that is not a real number. 4) is the set of positive irrational numbers closed for the operation of division? if not give a counter example.