Who to eliminate the parameter:
x=2+3 sin t
y=-3-3 cos t

Two lines parallel to the same plane are parallel to eachother

What is the length of the segment, endpoints of which are intersections of parabolas y=x^2− 11/4 x− 7/4 and y=− 7 /8 x^2+x+ 31/8 ?

If you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?