MATH!+ check please~ thanks in advance!
posted by conics!? .
the equation 2x^2+ cy^2+Dx+Ey+f= 0
represent a conic. state the value(s) of C for which each of the following are possible:
A circle:
My answer: c= 2
an ellipse:
My answer: c>0, cant equal 2
Parabola:
My answer:c=0
a hyperbola:
My answer: c<o ( any negative number)
are these right thanks!
You are exactly correct!
You are right on the money nice job
Respond to this Question
Similar Questions

Algebra 2
Can someone check my answers. Write the following equations in standard form. 1) x^2  2x + y^2 + 4y = 11 answer: (x1)^2 + (y+2)^2 = 16 2) 4x^2 + 24x  y + 34 = 0 answer: y = 4(x3)^2 + 2 3) The graph of which equation is a circle? 
math
Classify the conic section as a circle, an ellipse, a hyperbola, or a parabola. 25x2=64+16y ellipse parabola circle hyperbola 
algebra 2
Determine values for A, B, and C such that the equation below represents the given type of conic. Each axis of the ellipse, parabola, and hyperbola should be horizontal or vertical. Then rewrite your equation for each conic in standard … 
algebra 2
Determine values for A, B, and C such that the equation below represents the given type of conic. Each axis of the ellipse, parabola, and hyperbola should be horizontal or vertical. Then rewrite your equation for each conic in standard … 
algebra help please
I notice that other problems are answered in a timely manner....was is my overlooked? 
Algebra II
I am lost on this one!!! Determine values for A, B, and C such that the equation below represents the given type of conic. Each axis of the ellipse, parabola, and hyperbola should be horizontal or vertical. Then rewrite your equation … 
precalculus
Given: r = 4/26sintheta What type of conic does this represent? 
precalculus
Can you please check and correct my answers? 
precalculus
Given: r = 4/2costheta What type of conic does this represent? 
Algebra
Write the equation for the conic section of the cone is centered at (0,0), the major axis is 10 units and the minor axis is 6 units. (Ellipse) Write the equation for the conic section if the vertex is (6,4) and the focus is (6,7) …