Find all points on the curve x^2-y^2=1 passes through

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Find the coordinates of point x that lies along the directed line segment from y(-8, 8) to t(-15, -13) and partitions the segment in the ratio of 5: 2.

Identify the number 127 as a rational or irrational. explain