Good morning! Today is Wednesday, April 11(2), 2015 Do Now: SSR Read silently for 10 minutes, write about what you read for 5 minutes Remember, I do deduct points from your SSR grade for non-silence 

f x =a x 2 +bx+c where a ≠0 parabola The sign of the leading coefficient. If a is positive, it opens upward. If a is negative, it opens downward.

Vertex

Axis of Symmetry The Axis of Symmetry is a line. How do we write a line? With an ___________

Axis of Symmetry The Axis of Symmetry is a line. How do we write a line? With an equation. On your paper, sketch the graph of the line x = 2. Is it vertical or horizontal? Now sketch the graph of the line x = -3.

Example (IAN p. 19): c b a axis symmetry x= −b 2a x = −8 2 −2 x= −8 −4 axis of symmetry

Example (IAN p. 19): axis symmetry f 2 =−2 2 2 +8 2 −3 Vertex = (2, 5) f 2 =−2 2 2 +8 2 −3 f 2 =−2(4) + 16 − 3 f 2 =−8 + 16 − 3 Now you try: Find the Vertex and Axis of Symmetry for Example #2. Use p. 20 of your IAN. f 2 = 5 axis of symmetry x = 2