Determine which of the following equations, when graphed, intersect at the point (4,0) Select all that apply.

A. x - y = 4
B.-x - y = 4
C.2x - y = 7
D. x + y = 4
E. 2x + y = 7
F.2x + y = -7

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota

Julie begins counting backwards from 1000 by 2’s and at the same time tony begins counting forward from 100 by 3’s.   if they count at the same rate, what number will they say at the same time?

Which graph of a hyperbola represents the equation 16x^2-y^2=16