Page 305 - MATHEMATICS COURSE FOR SECONDARY SCHOOLS BOOK 2

y
x=7
-8 -7 -6 -5
30 25
20 15
10 5
-4 -3 -2 -1 0 -5
-10
-15 -20
1 2
x=3 3 4
y=0 5 6
x
c=21 -30
-25
299