SOLUTION: Solve. y-8x=0 8x^2+y^2=72 I want to know how they got these answers: (1,8)(-1,-8) Thank you for your help.

SOLUTION: Solve. y-8x=0 8x^2+y^2=72 I want to know how they got these answers: (1,8)(-1,-8) Thank you for your help.

Algebra.Com

Question 458746: Solve.
y-8x=0
8x^2+y^2=72
I want to know how they got these answers: (1,8)(-1,-8)
Thank you for your help.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
(1)
(2)
-----------------------
(1)
Substitute:
(2)
(2)
(2)
(2)
(2)

and,
(1)

and
(1)

(1,8), (-1,-8)

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