Thursday, September 8

Wildcat Drills Quizlet Live

4.2 Standard Form of a Quadratic Function Learning Target: I can graph quadratic functions written in standard form.

Ex. 1 Standard Form: 𝑦= 𝑎𝑥 2 +𝑏𝑥+𝑐. 1. 𝑦= 𝑥 2 −2𝑥+4 To find the 𝑥−𝑐𝑜𝑜𝑟𝑑𝑖𝑛𝑎𝑡𝑒 of the vertex, you use 𝑎 𝑎𝑛𝑑 𝑏 from the standard form. 𝑥= 𝑏 2𝑎 To find the y-coordinate, you plug the x value into the original equations and solve for y.

Indentify the vertex of each parabola. I do: 2. 𝑦= 𝑥 2 +2𝑥+3

We do: 3. 𝑦= −2𝑥 2 +2𝑥−5

You do: 3. 𝑦= −𝑥 2 +3𝑥−1

Ex. 2 Graph each function I do: 1. 𝑦= 𝑥 2 −2𝑥+4

We do: 2. 𝑦= 𝑥 2 +2𝑥+3

You do: 3. 𝑦= 𝑥 2 +2𝑥+1

Assignment: See Google Classroom