Give the coordinates of the circle's center and its radius. x^2 + y^2 − 16 = 0
a. (1,1);r=4
b. (0,0);r=16
c. (0,0);r=4
d. (1,1);r=16
e. none of these
Find the equation of the parabola with vertex at (0, 0) and focus at (0, 3).
a. x^2=3y
b. y^2=12x
c. x^2=y+3
d. x^2=12y
e. none of these
Find the equation of the parabola with vertex at (5, 4) and focus at (-3, 4).
a. (y+4)^2 =−32(x−5)
b. (y+4)^2=32(x+5)
c. (y−4)^2 =−32(x−5)
d. (y−4)^2=32(x−5)
e. (y−4)^2=8(x−5)
Write the equation of the ellipse that has its center at the origin, focus at (2, 0) and vertex at (7, 0).
a. x^2/33 + y^2/49 = 1
b. x^2/33 + y^2/49 = 1
c. x^2/49 + y^2/33 = 1
d. x^2/33 + y^2/49 = -1
e. none of these
