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4 cards from this section. Quick, good the night before a test.
Find the domain of f(x) = 1/(x+4).
What value makes the denominator zero?
What is the x-intercept of f(x) = (x-5)/(x+1)?
Set the numerator equal to zero.
What is a rational function?
Think of functions that involve fractions.
The domain of f(x) = 1/(x+5) must exclude which value?
Set the denominator equal to zero to find this value.
For the function f(x) = (3x^2 + 9)/(x^2 - 5), find the vertical and horizontal asymptotes, as well as the intercepts.
Remember to factor and simplify for intercepts.
Sketch the graph of g(x) = (x^3 - 6x)/(x^2 - 4). Identify all intercepts and asymptotes.
Factor the numerator for intercepts.
6 more questions in this section. Enroll free to practise them all.
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