Which two lines are parallel?
i.3y=-2x-3
ii.
3y=1-2x
iii.
4y-3x=-1
a.
i. and ii.
c.
ii. and iii.
b.
i. and iii.
d.
no two of the lines are parallel.

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