Pre-Algebra Demystified

Math Note: When graphing lines, it is best to select three points

rather than two points in case an error has been made. If an error has

been made, the three points will not line up.

PRACTICE

Draw the graph of each of the following:

1. x
   y¼ 3


2. 
   xþ4y¼ 9


3. 2xþ5y¼ 7


4. 3x
   y¼ 6


5. 
   5xþy¼
   11

ANSWERS

1. See Fig. 11-9


2. See Fig. 11-10


3. See Fig. 11-11


4. See Fig. 11-12


5. See Fig. 11-13

212 CHAPTER 11 Graphing

Fig. 11-9.