## Unit 4 - Applications of Quadratics

Now that we know what a quadratic relationship is and how they look (parabolas), we can start working with the algebra more to solve problems and connect to real-life scenarios.

Heads-up, this is a shorter unit with only 5 lessons but * they are more difficult in nature!!* Attendance and practice are crucial. Also, we have the mock literacy test between some lessons. Check your cohort calendar!

### 4.1 - The Quadratic Formula

**Solving When it Doesn't Factor (Part 1)**

**A: Fri. Oct. 16th**

**B: Mon. Oct. 19th**

**4.1 Helpful Videos:**

▶ **Mr. Brash's Video**

▶ Entire Playlist (Khan)

### [Optional] - Solving When it Doesn't Factor (Pt. 2)

**The "new" method. Also known as the pq-formula.**

### 🏠 4.2 - Vertex Formula & The Discriminant

**Breaking down the Quadratic Formula**

**A: Mon. Oct. 19th**

**B: Tues. Oct. 20th**

**4.2 Helpful Videos:**

▶ **Mr. Brash's Video**

▶ Vertex Formula (Khan)

▶ The Discriminant (Khan)

### 4.3 - Generating the Equation from Details

**A: Tues. Oct. 20th**

**B:**🏠

**Thurs**

**. Oct. 22nd**

**Mr. Brash's Video Lesson** | **Video ****Written File**

In-class Less File: Blank | Filled

**4.3 Helpful Videos:**

▶ **Mr. Brash's Video**

▶ Given the * Vertex *and a Point

▶ Given the

*and a Point*

**Roots**### 4.4 & 4.5 - Applications of Quadratic Equations

**A:**🏠

**Tues. Oct. 20th to Fri. Oct. 23rd**

**B: Fri. Oct. 23rd to Mon Oct. 26th**

Yay word problems!

In-class Less File: Blank | Filled

Text photocopies handed-out in class # 2, 4, 5*, 7 (read example 4), 11*, 12, 13*

* means challenging

Even More Extra Practice Questions (no answers yet)

**Word Problems Helpful Videos:**

▶ Helicopter from a Platform

▶ Restaurant Net Value

▶ Standard Form (ball shot)

▶ Factored Form (rocket launched)

▶ Vertex Form (object launched)

**Review for the Test**

**Review for the Test**

Practice Test (from Mrs. Strome)

Answers (from Mrs. Strome)