Problem 4.1: Match each equation with its graph:
a) x < - 1
b) x > - 1
c) x≠ - 1
d) x≤ - 1
e) x≥ - 1
[Solution]

Problem 4.2: Graph x≤4 on the number line. [Solution]

Problem 4.3: Graph 3 > x on the number line. [Solution]

Problem 4.4: Solve by graphing:

x + 17 > 7 - 2x [Solution]

Problem 4.5: Solve by graphing:

≥ - 1 [Solution]