SOLUTION: Draw the curve for the following equation a.x2 + 4y2 + 4xy =9 b.3x + 7y=8

Algebra ->  Quadratic-relations-and-conic-sections -> SOLUTION: Draw the curve for the following equation a.x2 + 4y2 + 4xy =9 b.3x + 7y=8      Log On


   

Question 440075: Draw the curve for the following equation
a.x2 + 4y2 + 4xy =9
b.3x + 7y=8
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
a. x%5E2+%2B+4xy+%2B+4y%5E2+=+%28x%2B2y%29%5E2+=+9
==> x + 2y = 3 (top graph)
or x+ 2y = -3 (bottom graph)
graph%28+300%2C+300%2C+-5%2C+5%2C+-5%2C+5%2C+%283-x%29%2F2%2C+%28-x+-+3%29%2F2+%29
b. 3x + 7y = 8.
graph%28+300%2C+300%2C+-5%2C+5%2C+-5%2C+5%2C+%288-3x%29%2F7%29