1. Warm-up 3-2 In groups come up with answer to HW 22. When asked provide your answers in the space provided below. #2#3#4#5

2. Lesson 3-2: Graphing Objective Students will graph order pairs in a relation Students will determine whether an ordered pair is a solution of an equation Students will graph equation by plotting several solutions

3. Graphing Using Ordered Pairs Set up x – y table Plug in x values to obtain y values (at least 3 points) Checking Solutions An ordered pair is a solution if it “works” in the equation Example 1 Graph the equation y = 2x – 1 x y 0 1 -3 1

4. 2 nd Degree Equations Parabolas: “U” shape graph Need to graph enough points to find the min/max Example 3 Graph y = -x 2 + 2 x y

5. Domain & Range Domain: describes the x values Range: describes the y values Use inequalities to tell what values x or y can be Example 3 State the domain and range for example 1 and 2 Example 1: Example 2: Domain: R Range: R Domain: R Range: y < 2 HW 23