What is the domain and range for #y = 40 - 8x^2#? Algebra Expressions, Equations, and Functions Domain and Range of a Function 1 Answer elsie ☆ Mar 28, 2018 #D={x∈R}# #R={y∈R | x<=40}# Explanation: #color(violet)"Domain":# x can be any real number. and #color(violet)"Range":# y can be any real number however, it can only be less than or equal to 40. graph{40-8x^2 [-10, 10, -5, 5]} Answer link Related questions How do you determine if (-1, 4), (2, 8), (-1, 5) is a function? What is the domain for #f(x)=2x-4#? What is the domain and range for (3,1), (1,-4), and (2, 8)? What is the domain and range of a linear function? Is domain the independent or dependent variable? How do you find the domain and range of a function in interval notation? How do you find domain and range of a rational function? How do you find domain and range of a quadratic function? How do you determine the domain and range of a function? What is Domain and Range of a Function? See all questions in Domain and Range of a Function Impact of this question 2574 views around the world You can reuse this answer Creative Commons License