Lesson 2: Representing Quadratic Functions

Activity 2.1 QUADRATIC FUNCTIONS HUNT Encircle the quadratic functions inside the box below. y = -2x- + 1 f(x) =9 - x3 + 15x y = 10x(x + 2) -3 f(x) = 12 - 4x f(x) = 6x - 4 f(x) = 3x2 + 6x - 5 y = 2x3 - 3x2 + 7x y = 5x + 1 y = x(x - 6) - 8Activity 2.2 AM I OR AM I NOT? Write the letter that corresponds to the graph of a quadratic function. MATH 9 QUARTER 1 WEEK 6 Page 6 | 10 B. C. D. E. Remember " A quadratic function is a function that can be described by the equation of the form y = ax' + bx + c, or f(x) = ax + bx + c where, a, b, and c are real numbers and a # 0. The quadratic function is in a 2nd degree. The table of values of a quadratic function shows that equal differences in x produced equal second differences in y. The graph of a quadratic function is called a parabola