This precalculus polynomial rational quiz asks 10 multiple-choice questions on polynomial and rational functions in depth, and each answer comes with a short explanation.
Answer these 10 questions on rational roots, complex zeros, end behavior, asymptotes and inequalities. Each question has exactly one correct answer, and the explanation names the most common mistake. Aim for at least 8 correct.
🎯 Polynomial and Rational Functions in Depth – Precalculus math quiz
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Question 1
How many possible rational zeros does the Rational Root Theorem give for \(2x^{3}-5x^{2}+x+6\)?
A8
B12
C6
D24
Question 2
Which number can NOT be a rational zero of \(3x^{3}+x^{2}-4x-4\)?
A\(\frac{2}{3}\)
B\(\frac{3}{4}\)
C\(\frac{4}{3}\)
D\(-1\)
Question 3
The graph shows one zero, \(3+i\), of \(x^{2}-6x+10\). What is the other zero?One zero is plotted.
A\(3-i\)
B\(-3+i\)
C\(-3-i\)
D\(1+3i\)
Question 4
A polynomial with real coefficients has degree 7. What is the least number of real zeros it can have?
A1
B0
C2
D7
Question 5
What is the end behavior of \(f(x)=-3x^{4}+2x-1\)?
ARises to the left and falls to the right
BFalls to the left and falls to the right
CFalls to the left and rises to the right
DRises to the left and rises to the right
Question 6
The graph shows \(f(x)=\frac{x^{2}+x-2}{x-2}\). What is the equation of its slant asymptote?Graph of f.
A\(y=x+3\)
B\(y=x-2\)
C\(y=x+4\)
D\(y=x\)
Question 7
Which function has a slant asymptote?
A\(f(x)=\frac{x^{2}+1}{x^{2}-4}\)
B\(f(x)=\frac{x^{2}+1}{x^{3}-4}\)
C\(f(x)=\frac{x^{3}+1}{x^{2}-4}\)
D\(f(x)=\frac{x^{4}+1}{x^{2}-4}\)
Question 8
The sign chart is for \((x+4)(x-1)(x-2)\). Which set solves \((x+4)(x-1)(x-2) < 0\)?Signs of the product on each interval.
A\((-4,1)\) ∪ \((2,\infty)\)
B\((-\infty,-4]\) ∪ \([1,2]\)
C\((1,2)\)
D\((-\infty,-4)\) ∪ \((1,2)\)
Question 9
Solve \(\frac{x-3}{x+2} \ge 0\).
A\((-\infty,-2]\) ∪ \([3,\infty)\)
B\([-2,3]\)
C\((-\infty,-2)\) ∪ \([3,\infty)\)
D\((-2,3]\)
Question 10
Solve \(x^{2}(x-3) \ge 0\).
A\(x \ge 3\)
B\(x \ge 0\)
C\(x \le 3\)
D\(x=0\) or \(x \ge 3\)
🎉 Quiz complete!
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How does this quiz work?
Read each question, choose one answer among A, B, C and D, then check it: a short explanation appears after every answer. Your score out of 10 is shown at the end, and you can restart the quiz as often as you like.
What should you review before the quiz?
Reread the key facts of the lesson and the worked example. If a question is hard, go back to the matching part of the lesson, then try the quiz again. Write your work on scrap paper: most mistakes come from skipping a step, not from the idea itself.
Remember:
Standards A-APR.B.2, A-APR.B.3, F-IF.C.7c, F-IF.C.7d and N-CN.C.9 covered in depth at the Precalculus level.
Rational zeros have the form \(\frac{p}{q}\) with \(p\) dividing the constant term and \(q\) dividing the leading coefficient.
A degree \(n\) polynomial has exactly \(n\) complex zeros counting multiplicity; real polynomials have conjugate pairs \(a\pm bi\).
End behavior follows the leading term; a slant asymptote exists when the numerator’s degree is one more than the denominator’s.
Solve inequalities by finding critical numbers, testing intervals on a sign chart, and checking endpoints.
How to use this precalculus polynomial rational quiz
Retake this precalculus polynomial rational quiz until every answer is right, then move on to the worksheet and the test.
