What is the x-coordinate of the point that divides the directed line segment from K to J into a ratio of 1:3? x = (StartFraction m Over m + n EndFraction) (x 2 minus x 1) + x 1

–1
3
7
11

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