MATH 121 - WRITTEN EXERCISES-MODULE 4

MATH 121 - WRITTEN EXERCISES-MODULE 4 - Jimmy...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Jimmy Morgan-MAT-121-OL-(1 Nov 09 thru 23 Jan 2010 Module 4 Written Assignment 3.1 2.) In Exercise 2, you are given an equation and the graph of a quadratic function. Do the following. A.) Give the Domain and Range b.) Give the coordinates of the vertex c.) Give the equation of the axis d.) Find the y- intercept e.) Find the x-intercepts. 2 ( ) ( 5) 4 f x x =-- Vertex= ( 10) 10 5 2(1) 2- - = = 2 10 21 x x- + 2 ( ) ( 10 ) 21 f x x x =- + 2 2 1 ( 10) ( 5) 25 2 - = - = 2 ( ) ( 10 25 25) 21 f x x x =- +- + = 2 ( 10 25) 25 21 x x- +- + = 2 ( 5) 4 x-- a.) Domain: ( 29 ,- , Range [ 29 4,- b.) Vertex: (5, -4) c.) Axis Equation: x = 5 d.) y-intercept = 21 e.) x-intercepts = 3, 7 18.) Graph each quadratic function. Give the vertex, axis, domain, and range. 2 ( ) 3( 2) 1 f x x = -- + 2 3 12 11; 3, 12, 11 x x a b c- +- = - = = - 12 12 2 2 2( 3) 6 b a--- = = =-- 2 (2) 3(2) 12(2) 11 f = - +- = 12 24-11- + = 1 Jimmy Morgan-MAT-121-OL-(1 Nov 09 thru 23 Jan 2010 Vertex: (2, 1), Axis: x = 2, Domain: ( 29 ,- , Range: ( ] ,1- 3.1 (Cont) 24.) Graph each quadratic function. Give the vertex, axis, domain, and range. 2 3 24 46 x x- +- a = -3 , b = 24, c = -46 x = h = 24 24 4 2 2( 3) 6 b a--- = = =-- 2 (4)=-3(4) 24(4) 46 f +- = 48 96 46- +- = 2 Vertex: (4, 2), Axis: x = 4, Domain: ( 29 ,- , Range: ( ] ,2- Jimmy Morgan-MAT-121-OL-(1 Nov 09 thru 23 Jan 2010 3.1 (Cont) 64.) College Freshman Pursuing Computer Science Degrees. Between 1998 and 2004, the number of college freshman who planned to get a professional degree in computer science can be reasonably modeled by 2 ( ) 348.2 1402 13,679, f x x x = - + + where x = 0 represents 1998. Based on this model, in what year did the percent of freshman planning to get a computer science degree reach its maximum? 2 ( ) 348.2 1402 13,679 f x x x = - + + ; 2 ( ) f x ax bx c = + + Vertex = 2 b a- ; 1402 1402 2.0132 2( 348.2) 696.4-- = =-- ( since 2000 corresponds to x = 2 in this table, The answer is 2000 )....
View Full Document

This note was uploaded on 04/07/2012 for the course MATH 121 taught by Professor Crockett during the Spring '12 term at Thomas Edison State.

Page1 / 12

MATH 121 - WRITTEN EXERCISES-MODULE 4 - Jimmy...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online