Choose a new chapter
About ClassZone  |  eServices  |  Web Research Guide  |  Contact Us  |  Online Store
ClassZone Home
McDougal Littell Home
 
Algebra 1: Concepts and Skills
 
  Home > Algebra 1: Concepts and Skills > Chapter 5 > 5.5 Modeling with Linear Equations
 
   
Return to book index Chapter 5 : Writing Linear Equations
5.5 Modeling with Linear Equations

5.5 Problem Solving Help

Help for Exercises 27-30 on page 303

Use the verbal model below to help find a linear model for Exercise 27.

1. Find two points on the line whose coordinates are both integers.

Verbal Model:

  

Use the variable x to represent the number of field goals made and the variable y to represent the number of free throws made.

In Exercise 28, use the subtraction property to write your linear model in slope-intercept form, y = mx + b. This form of the equation will help you answer Exercise 29, that is, to complete the table by finding several values of y. Once you have filled in the table for Exercise 29, make a graph. Set up the x- and y-axes. Remember to use scales that will allow you to show all the points from the table. Then plot the points. Notice that x and y must represent positive numbers (you cannot make a negative number of field goals or foul shots) so make sure that you only graph your line in the first quadrant. Because this a graph of a linear model, the points should fall along a straight line.




* PLEASE NOTE: To view our Extra Example pages, you must have the Adobe Acrobat Reader installed on your computer. You may download the Reader by clicking here if you do not already have it installed.