IV
2
Which function has an inverse that is a function?
b(x) = x2 + 3
Od(x) = -9
Om(x) = -7x
p(x) = [X]

1. ∠1 is complementary to ∠2 and ∠3 is complementary to ∠2. subtraction property of equality 2. m∠1 + m∠2 = 90 and m∠3 + m∠2 = 90 substitution 3. m∠1 + m∠2 = m∠3 + m∠2 definition of complementary 4. m∠1 = m∠3 given