Example23 - Now select a point not on the boundary, say...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Example 1 Graph 3 x + 4 y < 12. First, draw the graph of 3 x + 4 y = 12. If you use the x- intercept and y -intercept method, you get x -intercept (4,0) and y -intercept (0,3). If you use the slope-intercept method, the equation, when written in slope-intercept ( y = mx + b ) form, becomes Because the original inequality is <, the boundary line will be a dashed line. Look at Figure 1.
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Now select a point not on the boundary, say (0,0). Substitute this into the original inequality: This is a true statement. This means that the “(0,0) side” of the boundary line is the desired region to be shaded. Now, shade that region as shown in Figure 2. Figure 1. The boundary is dashed....
View Full Document

This note was uploaded on 11/10/2011 for the course MATH 1310 taught by Professor Staff during the Fall '07 term at Texas State.

Ask a homework question - tutors are online