Warm Up 1) Rewrite

HW Check 6.9 13. (b – 4)(b – 2) 14. (n + 4)(n + 2) 15. 2(n+9)(n-6) 16. 5(n+2)(n+2) 2(k+6)(k+5) 18. (a-10)(a + 9) 2(p+2)(p-1) 22. 4(v + 1)(v – 2) (x – 10)(x – 5) 24. (v – 5)(v – 2) 25. (p +6)(p-3) 26. 6(v + 1)(v + 10)

QUIZ – 30 minutes!

Graphic organizer on page 1 of your packet Graphing Graphic organizer on page 1 of your packet

Quadratic function A QUADRATIC FUNCTION is a function that can be written in the standard form: f(x) = ax2 + bx + c where a≠ 0

Graphing quadratic The graph of a quadratic function is U-shaped and it is called a PARABOLA.

Parts of a parabola VERTEX: the highest or lowest point on the graph. Max if open down Min if open up

Parts of a parabola AXIS OF SYMMETRY: vertical line (x = a) that divides the parabola into two symmetrical parts.

Ex #1: Vertex: ____ Axis of symmetry: _____ X-intercept:_____ Y-intercept:_____

#2 #3 Identify the vertex, axis of symmetry, x intercept and y intercept.

#4 Identify the vertex, axis of symmetry, x intercept and y intercept.

Complete the investigation: Pairs will display their work under the doc cam. Make sure your work is neat!!!

Homework 6.10 tonight

Graphing in a Calcuator

Calculator Commands Graph: Y=  Graph Vertex: 2nd Trace  Min or Max (left bound, right bound, enter) X-Intercepts: 2nd Trace  Zero (find each one separately) Y-Intercept: 2nd Graph  find where x is zero

Use a graphing calculator to answer the following questions Use a graphing calculator to answer the following questions. All equations must be in y= before we can graph them using the calculator. Ex. 1 Standard Form:__________ Graph: Vertex: ____ Axis of symmetry: _____ X-intercept:_____ Y-intercept:_____

Ex 2: Standard Form:______________ Graph: Vertex: ____ Axis of symmetry: _____ X-intercept:_____ Y-intercept:_____

Ex 3: Standard Form:______________ Graph: Vertex: ____ Axis of symmetry: _____ X-intercept:_____ Y-intercept:_____