KnowraLinear equationLinked fromLinked fromThe 23 pages that link to Linear equation, each with the reason it gives.All 23Broader topic 9Related 6Narrower topic 4Compared with 4Quadratic equationCompared with: Its graph is a line and it has at most one solution, unlike a quadratic.Quadratic formulaCompared with: When a is zero, the equation is linear and the quadratic formula’s denominator is invalid.Cubic equationCompared with: A linear equation has one root at most, unlike a cubic's three roots counted with multiplicity.Linear functionCompared with: It may describe a line, but unlike a function it need not specify one output per input.