## Algebra: A Combined Approach (4th Edition)

Opposite: -4y, Reciprocal: $\frac{1}{4y}$
The opposite of a number is one in which their sum equals 0. 4y + (-4y) = 0 The reciprocal of a number is one in which their product equals 1. 4y * $\frac{1}{4y}$ = 1