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College Algebra Quiz #3 for CLEP

Question 1: What is the sixth term of the expansion of (x/y - y/x)9

Question 2: For what real numbers a has the 4x2 - 2ax + 3a = 0 equation two real roots?

Question 3:

The function f(x) = 2ax/b - a2x2 - 1/b2 is shown in the graph above. Which of the following must be true?

Question 4: If the fourth and fifth terms of a geometric sequence are -1/18 and 1/54, what is the first term of the sequence?

Question 5: For what values of m is the line with the equation y = mx + 4 intersecting the line y = 1 in a point situated in the first quadrant?