Math II Questions

Test Preparation SAT Subject Test Preparation
1

<p>The graph of the equation x^2+y^2+2ax-4y+2a^2=0 represents a circle. What is the greatest possible integer value of a?</p>

<p>What is the center of an ellipse whose equation is x^2+4y^2-6x+8y+9=0? What are the lengths of the major/ minor axes?</p>

2

<p>For the first one I got a=2… just factor a bit.</p>

<p>center is at (3,-1) Length of major axis is 8, length of minor axis is 2… again just factor.</p>