Algebra II Terms
Get down with the lingo
AsymptoteCloser and closer and closer…a line that a graph approaches but never touches.
Combined VariationA relationship between three variables that combines or merges direct variation and inverse variation. Here's the general form:
Domain"D" is for domain, where the denominator doesn't equal diddly (by that, we mean the denominator isn't zero). The domain is just all the possible x-values a rational function can take.
Direct VariationA relationship between two variables that are directly proportional; when one increases, the other does too, and vice versa. The general form looks like this guy right here, where k is the constant of variation:
y = kx
Extraneous SolutionA false solution to an equation. It makes the equation blow up because the denominator is zero.
InterceptFor all you sports nuts—think football. It's the point where a graph "takes," "seizes," or "crosses" an axis.
Inverse VariationA relationship between two variables that are inversely proportional. In other words, as x increases, y decreases, and vice versa. Here's what that looks like in equation form, where k is the constant of proportionality:
Joint VariationJoint = together. It's a relationship where one variable is directly proportional to two other variables at the same time, with a constant of variation (k) thrown in for good measure. Here's the equation:
y = kxz