Pre-Algebra Demystified

SOLUTION

Find two points on each line. For xþy¼8, use (7, 1) and (3, 5). For x
y¼

2, use (3, 1) and (6, 4). Graph both lines and then find the point of inter-

section (see Fig. 11-27).

The point of intersection is (5, 3).

226 CHAPTER 11 Graphing

Fig. 11-26.

Fig. 11-27.