Chapter 2, Lesson 4

2-4.A understand the Inverse Property of Addition
Which of these statements are true?
The additive inverse of an integer is its opposite.
II) 0 has no additive inverse,
III) The sum of an integer and its additive inverse is 0.

(a) I and II only
(b) I and III only
(c) II and III only
(d) I, II, and III

2-4.B simplify algebraic expressions
Simplify each expression.
a. 4x + 16 — 7x + 1
b. 2(3y — 5) + 8y

2-4.C substitute into algebraic expressions and evaluate
Evaluate each expression for y = —5.
a. |—20| + 2y
b. 5y + 32y