8-2 Quadratic Functions in Vertex Form – We discovered that the structure of a quadratic function in vertex form reveals the vertex and axis of symmetry of the graph it represents.
Assignment: Complete the assigned problems for homework.
8-2 Quadratic Functions in Vertex Form – We learned to identify key features of the graph of quadratic functions written in vertex form. Then we practiced graphing quadratic functions in vertex form.
Assignment: Complete the assigned problems for homework, plotting quadratic functions.
Solving Systems of Linear Equations by Elimination – We learned to solve systems of equations using elimination. We followed these steps:
1. Write the system so equations are in the same form.
2. Add or subtract equations to ELIMINATE one variable; then solve.
3. Substitute the value from step 2 into one of the original equations.
4. Write solution as an ordered pair (x, y).
5. CHECK RESULT in both original equations.
Then we practiced setting up and solving word problems with elimination to prepare for a test.
8-1 Key Features of a Quadratic Function – Cameron graphed two functions and compared the average rates of change. Then he determined whether functions were increasing or decreasing over intervals.
8-1 Key Features of a Quadratic Function – Cameron watched the video that I recorded for him last week and practiced plotting quadratic functions with f(x) = ax2 where a<0, a>0, a>1, and 0<a<1.
Assignment: Complete the 2 assigned problems for homework.
8-1 Key Features of a Quadratic Function – We reviewed the attributes of a quadratic function such as minimum/maximum value, symmetry, domain, and range. Then we learned how the attributes affect the shape of a parabola.
Assignment: Complete the assigned problems for homework.
