Acc Math 1 Dec 7th

• Turn in homework – pp. 5-6• Continue your warm-ups on your sheet of paper

f(x) = 3x2 + 6x + 2Identify the …

1. vertex2. axis of symmetry3. y-intercept4. does it open up or down?

Check assignment pp. 5-65. Up; (0, 1); x = 06. Down; (0, -4); x = 07. Up; (1, -1); x = 18. Up; (-1, 0); x = -19. Up; (1, 1); x = 110. Down; (5/4, 1/8); x =

5/4

11. C12. A13. BGraphs should be sketched

with vertex and a/s labeled14. Vertex – (0, 2) 15. Vertex – (-2, 4)16. Vertex – (-1/2, 2 ½)17. Vertex – (-1, -3)18. Vertex – (3/2, -8 ¾)19. Vertex – (2, 19)

POP QUIZ

Graphing Quad. FunctionsVOCABULARY1. Standard form – f(x) = ax2 + bx + c2. Vertex form – f(x) = a(x – h)2 + k * Vertex is (h, k)3. Intercept form – f(x) = x(x – p)(x – q) *x-intercepts are (p & q)

GRAPHING FROM VERTEX FORMExample 1: Graph y = ½(x + 1)2 – 2

IDENTIFY the constants. a = _____, h = _____, k = ____

Because a ____ 0, the parabola opens ________.Plot the vertex (h, k) = (____, ____)

and draw the axis of symmetry at x = ____Plot the points (___, ___) and (___, ___)

and their reflections

Example Example f(x) = 2(x + 5)2 – 4 f(x) = - ½ (x – 3)2 + 1

Vertex:

Axis of sym:

2 other points:

ASSIGNMENTPages 9 - ALL