Identifying Conic Sections

Which equation shows an ellipse?

• $y^2+x-3y-15=0$

• $2x^2-4y^2+18x+120y-159=0$

• $4x^2+4y^2-16y+81=0$

• $16x^2+11y^2+54x-61y-121=0$

What type of conic section is 
 $6x^2+6y^2-3x+4y=0$ ? 

• Circle

• Parabola

• Hyperbola

• Ellipse

What type of conic section is
 $36x^2-5y^2+8x+2y+12=0$ ? 

• Hyperbola

• Parabola

• Ellipse

• Circle

What type of conic section is
 $25x^2+5y^2+6x+4y+2=0$ ? 

• Circle

• Ellipse

• Hyperbola

• Parabola

What type of conic section is
 $6y^2-5x-2y+5=0$ ?

• Parabola

• Circle

• Hyperbola

• Ellipse

What type of conic section is
 $-6x^2+4y^2+9x+y+7=0$ ?

• Circle

• Parabola

• Ellipse

• Hyperbola

What type of conic section is
 $x^2+6x-4y+1=0$ ?

• Parabola

• Cirlce

• Hyperbola

• Ellipse

What type of conic section is
 $4x^2-24x-9y^2-90y-153=0$ ? 

• Parabola

• Cirlce

• Hyperbola

• Ellipse

What type of conic section is $3x^2–y^2–11x–6y+4=0$ ?

• Ellipse 

• Hyperbola

• Circle

• Parabola

What type of conic section is $3x^2–y^2–11x–6y+4=0$ ?

• Ellipse 

• Hyperbola

• Circle

• Parabola