Answer to Question #87806 in Analytic Geometry for Jflows

Question

1._____is defined as the locus of a point which moves so that it is always the same distance from the fixed point (called the focus) and a given line called the directrix
a.A parabola
b.A hyperbola
c.A helix
d.An eclipse

2.if a=a1i+a2j+a3k and b=b1i+b2j+b3k, then ab
a.a=a1+b1+2b1
b.abcosθ
c.absinθ
d.a1b1+a2b2+a3b3

Answer 1

1. A parabola. Var. a.
2. ab=a1b1+a2b2+a3b3. Var. d.