The constant k k is the multiplier that connects them. Notice that this is actually a special type of linear equation. The general form of a line is y =mx+b y = m x + b, but in direct variation, b= 0 b = 0. …

Learn what the domain and range mean, and how to determine the domain and range of a given function. The domain of a function is the set of all possible input values, while the range is the set of …

Combining Like Terms Quick Answer - How do you combine like terms? Identify terms that have the same variable raised to the same power, then add or subtract their coefficients while keeping the …

Oct 18, 2023 · So a more general definition of proportionality is required then, oui? This example, y = x y =−x plays havoc with the intuition of proportionality as increase is met with increase Maybe we …

Linear Equations What Is a Linear Equation? A linear equation is an equation where the highest power of any variable is 1. That's the simple answer. The name "linear" comes from the fact that when you …

Mar 3, 2021 · If I have a limit, 3x as x approaches 2, for example, and say it equals 7, how can I prove my statement is false using the formal definition of limit? Another question I have is, how can I prove …

Learn to solve proportions and work with ratios. Master cross-multiplication, scale problems, and real-world applications like recipes, maps, and rates.

Jan 2, 2026 · Find helpful math lessons, games, calculators, and more. Get math help in algebra, geometry, trig, calculus, or something else. Plus sports, money, and weather math ...

Mar 30, 2007 · What is the definition of focus (mathematical) of a hyperbola? It is by definition c = sqrt (a^2 + b^2) If you have that - then you can show that the difference of distances from each focus of …

Free integral calculator with step-by-step solutions. Compute indefinite and definite integrals and see the work shown.