574 Final Exam
(c) It’s a number that we can add to a given number to produce a sum equal to the
negative of the original number.
(d) It’s a number that we can add to a given number to produce a sum of 1.
(e) It’s a number that we can add to a given number to produce a sum equal to twice
the original number.- Consider the following pair of equations as a two-by-two linear system:
2 r= 6 s− 8and− 7 r=− 21 s+ 28What is the solution to this system?
(a) (r,s)= (−2, 7).
(b) (r,s)= (−8/7, 6/7).
(c) (r,s)= (1/4, −3/4).
(d) There are infinitely many solutions.
(e) There is no solution.- The essential domain of a mapping is always a subset of the
(a) maximal domain.
(b) codomain.
(c) independent variable.
(d) dependent variable.
(e) range. - Figure FE-11 is graph of a quadratic function where x is the independent variable.
Based on the information shown, what can we say about the coefficient of x^2 in the
polynomial standard form of the function?
(a) It is an imaginary number.
(b) It is a complex (but not real) number.
(c) It is a positive real number.
(d) It is a negative real number.
(e) We need more information to answer this. - Based on the information shown in Fig. FE-11, how many real zeros does the
quadratic function have?
(a) More than two.
(b) Two.
(c) One.
(d) None.
(e) We need more information to answer this.