Let p = (x, y) be a point on the graph y=x2-7

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

Ethan is proving that the slope between any two points on a straight line is the same. he has already proved that triangles 1 and 2 are similar. drag statements and reasons to complete the proof.

Order 1100000, 314000, 965000, 1890000, from least to greatest.