SOLUTION: X^2 + y^2 = 153 Y = -4x

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Question 864440: X^2 + y^2 = 153
Y = -4x
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.x%5E2%2By%5E2=+153
2.y+=+-4x
From eq. 2,
y%5E2=16x%5E2
Substitute into eq. 1,
x%5E2%2B16x%5E2=153
17x%5E2=153
x%5E2=9
x=0+%2B-+3
When x=3,y=-12
When x=-3,y=12
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