1st GRADING EXAMINATION (MATH 9)

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A. Fraction B. Rational equation C. LCD D. Root 2 ___15. What function having form of f(x) = ax +bx+c, where a, b, and c are numbers with a is not equal to zero? A. Linear Equation C. Quadratic Expression B. Quadratic Function D. Polynomial Expression ___16. What is the standard form of quadratic function? A. f(x) = ax2+bx+c C. f(y) = ax^2+bx+c B. f(x) = ax^2+bx+c D. f(x) = x^2+bx+c ___17. What is the value of ‘a’ and ‘b’ if the form of quadratic function is f(x) = ax2? A. 1. B. 2 C. 3 D. 0 ___18. What will you do if you want to transpose 10 into other side in equation y -10 = x? A. Multiply both side by 10 C. Subtract both side by -10 B. Divide both side by -10 D. Add both side by 10 ___19. What is the sum of the zeros of f(x) = x2 + 5x + 6? A. 5 B. -5 C. 30 D. 11 ___20. What is the product of the zeros of f(x) = x 2 + 5x + 6? A. 5 B. -5 C. 30 D. 11 II. Fill in the blanks with the correct word or words to complete the statement. 1. A second degree equation is called __________. 2. The general form of a second-degree equation is written in the form of __________. 3. . The square Root Property is used to solve __________ quadratic equation in which b=0. 4. The common monomial factor in the expression 3 x 2−24 x is __________. 5. When the discriminant is less than zero, the roots are called __________. III.Determine the values of a, b, and c in the following. Equation a b c 2 1. 2x – 18x + 12 = 0 2. 4x2 – 12x - 24 = 0 3. x2 – 7x - 15 = 0 4. x2 – 10x - 2 = 0 5. 5x2 + 9x - 6 = 0 IV.Determine the sum and product of the roots of each equation. Equation Sum of roots Product of roots 2 1. x + 6x + 12 2. x2 + 10x + 32 3. x2 – 5x + 4 4. x = -4 and x = -5 5. x = 6 and x = 8 V.Determine the quadratic equation whose roots are: 1. 3 and -5 3. -2 and -5 5. 8 and -4 2. ¼ and ¾ 4. 4 and -4 VI.Change the following quadratic function in the form f(x) = a(x-h)2 + k. 1. f(x) = 8x2 __________ 2. f(x) = 3x2 + 14 __________ 3. f(x) = 4x2 +4x – 5 __________ 4. f(x) = 2x2 – 8x +5 __________ 5. f(x) = x2 __________

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