4.2 Practice with Examples - WorthysAlgebraClass
4.2 Practice with Examples - WorthysAlgebraClass
4.2 Practice with Examples - WorthysAlgebraClass
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LESSON<br />
<strong>4.2</strong><br />
CONTINUED<br />
NAME _________________________________________________________<br />
<strong>Practice</strong> <strong>with</strong> <strong>Examples</strong><br />
For use <strong>with</strong> pages 210–217<br />
DATE ____________<br />
EXAMPLE 2<br />
Graphing a Linear Equation<br />
Use a table of values to graph the equation x 2y 4.<br />
SOLUTION<br />
Rewrite the equation in function form by solving for y.<br />
x 2y 4<br />
Write original equation.<br />
2y x 4 Subtract x from each side.<br />
y x 2 2<br />
Divide each side by 2.<br />
Choose a variety of values of x and make a table of values.<br />
Choose x. 4 2 0 2 4<br />
Evaluate y. 4 3 2 1 0<br />
Using the table of values, you can write five ordered pairs.<br />
4, 4, 2, 3, 0, 2, 2, 1, 4, 0<br />
Plot each ordered pair. The line through the points is the graph<br />
of the equation.<br />
Exercises for Example 2<br />
Use a table of values to graph the equation.<br />
5. y 3x 4<br />
6. 3y 3x 6<br />
7. y 3x 1<br />
6<br />
2<br />
y<br />
6<br />
2<br />
6<br />
6<br />
x<br />
Chapter 4<br />
74 Algebra 1<br />
<strong>Practice</strong> Workbook <strong>with</strong> <strong>Examples</strong><br />
Copyright © McDougal Littell Inc.<br />
All rights reserved.
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