SOLUTION: "Graph the equation, then choose the correct coordinates of the foci. y^2= 5x^2+25." I graphed it but for some reason I keep getting the wrong answer for the foci. I could use so

Algebra ->  Algebra  -> Quadratic-relations-and-conic-sections -> SOLUTION: "Graph the equation, then choose the correct coordinates of the foci. y^2= 5x^2+25." I graphed it but for some reason I keep getting the wrong answer for the foci. I could use so      Log On

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Question 42622: "Graph the equation, then choose the correct coordinates of the foci.
y^2= 5x^2+25." I graphed it but for some reason I keep getting the wrong answer for the foci. I could use some help! Thanx!
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+sqrt%285x%5E2+%2B+25%29%2C+-sqrt%285x%5E2+%2B+25%29+%29+
y^2 = 5x^2 + 25
y^2 - 5x^2 = 25
y^2/25 - x^2/5 = 1
a = 5
b = sqrt%285%29
a%5E2+%2B+b%5E2+=+c%5E2
25+%2B+5+=+c%5E2
30+=+c%5E2
sqrt%2830%29+=+c
(0,sqrt%2830%29) and (0,-sqrt%2830%29)