For triangle ABC with vertices A(1,1) B(3,3) and C (5,–1): Determine the equation of the median of AB.

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.