Identify the greatest common factor.2x2y - 10xy2
A. 2
B. 2x2y2
C. 2xy
D. xy
Answer: C
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Find the sum and simplify the answer. 
A. 
B. 
C. 
D. 
Determine whether the equation defines y as a function of x.y2 = (x - 9)(x + 7)
A. Yes B. No
Classify the system as either consistent or inconsistent.
A. Inconsistent B. Consistent
Mark as true any statement that is always true. Mark as false any statement that is never true or that is not necessarily true. Be able to justify your answers.
1. Any set of three lines in the same plane has one pair of parallel lines and one transversal line. 2. To begin an argument using indirect reasoning, we assume that the hypothesis of the statement to be proved is true and that the negation of the conclusion of the statement is true. 3. If two lines cut by a transversal form a pair of supplementary corresponding angles with the transversal, then the lines are parallel. 4. The exterior angle to any vertex in a triangle is equal to the sum of any two interior angles in the triangle. 5. If two parallel lines are cut by a transversal, the alternate interior angles are congruent.