1. 5.5 Quadratic Formula Warm-up (IN) Learning Objective: To use the quadratic formula to find real roots of quadratic equations and to use the roots to find the axis of symmetry of the parabola Evaluate the expression for the given values of a, b, and c. 1.a=1, b=3, c=-1 2.a=2, b=-2, c=0 3.a=-1, b=0, c=5 4.a=-2, b=2, c=-3

2. Notes Learning Objective: To use the quadratic formula to find real roots of quadratic equations and to use the roots to find the axis of symmetry of the parabola **Quadratic Formula - EX 1 – Solve: a b c

3. Learning Objective: To use the quadratic formula to find real roots of quadratic equations and to use the roots to find the axis of symmetry of the parabola a b c

4. **equation for axis of symmetry – it’s also the x-coordinate of the vertex! EX 2 – let, write an equation for the axis of symmetry and find the coordinates of the vertex.

5. HW – p. 311 #12-45 mult. of 3, 49-51 Out – How is the axis of symmetry related to the vertex of a parabola? Summary – Today, I learned… POW!!