1.   Write an equation in slope-intercept form for the line with a slope -3 and passes through the point (4, 2).
    A. y = -3x + 2 B. y = -3x + 14
    C. y = -3x + 4 D. y = -3x - 8
    Hint
  2.   Which is the graph of

?
    A. B.
    C. D.
    Hint
  3.   Solve the system of equations by substitution.

x = z
x - 2y + z = 6
2x + y - 2z = 1

What is the value of x + y + z?
    A. 8 B. 11
    C. 10 D. 9
    Hint
  4.   The profit for each unit of lumber is $40 and the profit for each unit of plywood is $60. Write a profit function P(x, y) if x = the number of units of lumber and y = the number of units of plywood.
    A. P(x, y) = 60x + 40y B. P(x, y) = 40x + 60y
    C. P(x, y) = 60x - 40y D. P(x, y) = 40x - 60y
    Hint
  5.   Determine the symmetry of f(x) = x7.
    A. symmetric with respect to the origin B. symmetric with respect to only the x-axis
    C. symmetric with respect to only the y-axis D. not symmetric
    Hint
  6.   Determine the symmetry of the graph of xy = -4.
    A. none is correct B. the line y = x and
the line y = -x
    C. the line y = -x D. the line y = x
    Hint
  7.   If you use the parent graph f(x) = [[x]], describe how you would graph
g(x) = 3[[x]].
    A. The vertical distance between the steps for g(x) is 1/3 unit. B. There would be no difference between f(x) = [[x]] and
g(x) = 3[[x]].
    C. None of these is correct. D. The vertical distance between the steps for g(x) is 3 units.
    Hint
  8.   Which is the graph of f(x) = |x| - 4 and its inverse?
    A. B.
    C. D.
    Hint
  9.   Graph y = .
    A. B.
    C. D.
    Hint
  10.   Find the number of positive real zeros for
f(x) = 3x5 + 2x3 + x2 + 7x - 1 = 0.
    A. 4 or 2 or 0 positive real zeros B. no positive real zeros
    C. exactly 1 positive real zero D. 4 or 2 positive real zeros
    Hint
  11.   Write an equation in slope-intercept form with a slope of that passes through the point (-3, -5).
    A. B.
    C. D.
    Hint
  12.   Determine two points that appear to represent the data in the scatter plot. Then find and interpret the slope.
   
    A. Paul's test scores are neither increasing nor decreasing.
    B. Paul's test scores improve an average of 15 points with each test.
    C. Paul's test scores improve an average of 3 points with each test.
    D. Paul's test scores improve an average of 5 points with each test.
    Hint
  13.   Solve the system of three equations by elimination:

5x + 2y - 3z = 10
2x - 2y + 4z = 6
x - y + 2z = 3
    A. (3, 4, 2) B. (2, -5, 3)
    C. infinite solutions D. no solution
    Hint
  14.   Find the value of the determinant .
    A. -25 B. -29
    C. -43 D. -3
    Hint
  15.   Find the maximum value of f(x, y) = 2x + y - 4 for the system of inequalities:
y -3x + 1
y x - 4
x 0
y 0
    A. 2 B. infeasible
    C. alternate optimal solutions D. unbounded
    Hint
  16.   Sam has $10,000 to deposit in two different savings accounts. He wants at least $3,000 in the account with 3% interest. He wants no less than $5,000 in the account with 7% interest.Graph this system of inequalities.
    A. B.
    C. D.
    Hint
  17.   If you use the parent graph as a reference, describe how you would graph .
    A. Compress vertically by a factor of , then move 4 units down. B. Compress horizontally by a factor of , then move 4 units down.
    C. Expand vertically by a factor of 3, then move 4 units down. D. Expand horizontally by a factor of , then move 4 units down.
    Hint
  18.   Given the function f(x) = x2 - 8x + 16, find the inverse.
    A. f -1 = 4 B. f -1 = x - 4
    C. f -1 = x - 2 D. f -1 = (x - 4)2
    Hint
  19.   Determine the equation of the vertical asymptote for the function:
f(x) = + 2.
    A. y = 0 B. x = 0
    C. x = -2 D. x = 2
    Hint
  20.   Determine the slant asymptote for f(x) = .
    A. y = 4 B. y = x + 4
    C. y = -x + 3 D. y = x + 3
    Hint

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