Quiz Me: Quiz Me: 6.1-2 Find the domain of a function of several variables. Determine the domain of the function of two variables f(x,y) = y+9x. This quiz: 3 point(s) possible Question 1 of 3 > Resume later This question: 1 point(s) possible Submit quiz The domain is {(x,y) | (Type an inequality. Use a comma to separate answers as needed. Use integers or fractions for any numbers in the inequality.) Next