Which equation represents a line that is parallel to the x-axis, is perpendicular to the yaxis, and has a slope of 0? A. y=4/5x+5/4
B. y=5/4x
C. y=4/5
D. y=5/4

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