Algebra II Terms
Get down with the lingo
AsymptoteCloser and closer and closer…a line that a graph approaches but never touches.
Combined VariationCombines or merges direct variation (one goes up the other goes up) and inverse variation (one goes up the other goes down).
Domain"D" is for domain, where the denominator doesn't equal diddly (by that, we mean the denominator isn't zero).
Direct VariationAn equation with a constant (k) where one goes up, the other goes up, or one goes down, the other goes down.
y = kx
Extraneous RootA 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 VariationAn equation with a constant (k) where one goes up, the other goes down, or one goes down, the other goes up.
Joint VariationJoint = together. It's an equation with a constant (k) where one depends on two variables together.
z = kxy
Rational EquationKeep an eye out for "ratios" and an "=" sign. This is an equation involving one or more rational expressions.
Rational Function"Rational" = ratio. This is a function that is equal to the ratio of two polynomials.
ReciprocalA "flipped" or inverted fraction. Watch out for the zeros in the denominator.
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