# Chapter 4 Section 8 Use the Quadratic Formula In this assignment, you will be able to... 1.Solve a quadratic equation by using the quadratic formula. 2.

## Presentation on theme: "Chapter 4 Section 8 Use the Quadratic Formula In this assignment, you will be able to... 1.Solve a quadratic equation by using the quadratic formula. 2."— Presentation transcript:

Chapter 4 Section 8 Use the Quadratic Formula In this assignment, you will be able to... 1.Solve a quadratic equation by using the quadratic formula. 2. Use quadratic formula to model object launched.

Solve the equation by using the quadratic formula. 1.)

Answer: Original equation Subtract 2 from both sides a=1b=3c=-2 Find a, b and c Plug in a, b and c into the quadratic formula. Solve or

Solve the equation by using the quadratic formula. 2.)

Solve the equation by using the quadratic formula. 3.)

Solve the equation by using the quadratic formula. 4.)

Solve the equation by using the quadratic formula. 5.)

Solve the equation by using the quadratic formula. 6.)

Solve the equation by using the quadratic formula. 7.)

Solve the equation by using the quadratic formula. 8.) Juggling. A juggler tosses a ball into the air. The ball leaves the juggler's hand 4 feet above the ground and has an initial velocity of 40 feet per second. The juggler catches the ball when it falls back to the height of 3 feet. How long is the ball in the air? Use the model launched formula

Solve the equation by using the quadratic formula. 9.) Basketball. A basketball player passes the ball to a teammate. The ball leaves the player's hand 5 feet above the ground and has an initial velocity of 55 feet per second. The teammate catches the ball when it returns to a height of 5 feet. How long is the ball in the air? Use the model launched formula

Solve the equation by using the quadratic formula. 10.) Biology. The number S of ant species in Kyle Canyon, Nevada, can be modeled by the function where E is the elevation (in meters). Predict the elevation(s) at which you expect to find 10 species of ants.

11.)Find the minimum or maximum value of the function