Question

Choose the correct answer:

1) The curve r = 2 + cos(2θ) is symmetric about Select one:

A_ all of these answers.

B_ the x-axis with vertical tangent at θ= π

C_ the origin with vertical tangent at θ = 2π

D_ the y-axis with vertical tangent at θ = 0.

2) The equation 3x^2 - 6x - 2y + 1= 0 is Select one:

A- a parabola open up with vertex (-1 , 1) and p = 1/6

B- none of these answers.

C- a parabola open down with vertex (1, —1) and p = 1/6

D- a parabola open up with vertex (1, —1) and p=1/6

E- a parabola open up with vertex (1, —1) and p 6.

3)The equation of the hyperbola whose foci are (0, 6) and (0, —4) and and one asymptote is y - 1= 2x is Select one:

A- ( y - 1 )^2 / 20 - x^2/5 = 1

B- x^2/20 - ( y - 1 )^2 /5 = 1

C- ( y - 1 )^2 /5 - x^2/20= 1

D- x^2/5 - ( y - 1 )^2 / 20= 1

E- none of these answers

Answer 1