Find the equation of the parabola corresponding to the given information.The parabola has focus and directrix as shown.
A. y = - 
x2
B. x = - 
y2
C. x = 
y2
D. y = 
x2
Answer: B
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Graph the parabola whose equation is given.y = -x2 - 2x + 8
A. 
B. 
C. 
D. 
Which of the following is an example of a concatenation error in algebra?
a. Believing that an algebraic equation is an efficient solution strategy for a problem when using arithmetic would actually be more efficient. b. Believing that a graphical representation of a function is superior to a tabular representation. c. Believing that the order variables appear in an equation should be the same as the order they appear in a corresponding word problem. d. Believing that the expression "ab" represents a two-digit number where "a" is in the tens place and "b" is in the ones place.
Determine the size of matrix A and tell whether it is a square matrix, row matrix, column matrix, or none of these.A = 
A. 3 × 1; column matrix B. 3; row matrix C. 1 × 3; column matrix D. 1; row matrix
Solve the problem.Suppose that f(x) = 2(7z - 1)-2 + 5(7z - 1)-1. Find the values of x such that f(x) = -2.
A. - 
, - 
B. -2, - 
C. - 
, 0
D. - 
, 