1) Which is NOT a quadratic inequality? a) x2 + 2x - 3 > 0 b) x2 + 7x - 3 < 15 c) x2 + 12x + 7 = 0 d) x2 ≥ 9 2) How is Quadratic Equation differs from Quadratic Inequality? a) Differs in number of solutions b) Differs in solving for the roots c) Differs in symbol used d) all of the above 3) What is the first step in solving quadratic inequality. a) Change the inequality symbol into = sign b) Plot the points/value of x in a number line. c) test a number from each intervals against inequality. d) Write the inequality in standard form 4) What line will you use in graphing the quadratic inequality  x2- 49 ≥ 0 ? a) Solid Lines b) Dotted Lines c) Zigzag d) heart 5) Using dotted lines in graphing means that the critical values (x) are NOT part of the solution set. a) True b) False 6) What are the critical values/neutral numbers of the quadratic inequality x2- 49 ≥ 0 ? a) x = 49, x = -49 b) x = 7, x = -7 c) x = 7 d) x = -7 7) Which graph best defines the quadratic inequality x2- 49 ≥ 0 ? a) b) c) d) 8) Which graph best defines the solution set of the quadratic inequality x2- 49 ≥ 0 ? a) b) c) d) 9) What is the solution set of the quadratic inequality x2- 49 ≥ 0 in INTERVAL NOTATION. a) (-7,7) b) [-7,7] c) (-∞,-7] ∪ [7,∞) d) (-∞,-7) ∪ (7,∞) 10) What is the solution set of the quadratic inequality x2- 49 ≥ 0 in SET NOTATION.  a) x < -7 or x > 7 b) x ≤ -7 or x ≥ 7 c) -7 < x < 7 d) -7≤ x ≤ 7

Solving Quadratic Inequalities

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