SOLUTION: Which of the coordinate pairs below is a solution to the following system of equations? x2 + y2 = 18 5x + y = 17

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Question 750119: Which of the coordinate pairs below is a solution to the following system of equations?
x2 + y2 = 18
5x + y = 17
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
x2 + y2 = 18
5x + y = 17
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No pairs are given.
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Sub them into the linear eqn 1st.
If they fit, try the circle.
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To solve it:
x2 + y2 = 18
5x + y = 17 -- y = 17 - 5x
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sub for y in the circle
x%5E2+%2B+%2817-5x%29%5E2+=+18
Solve for x, then for y.