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MathNet 2021 — Part 01 Question 14

Math Olympiad Vault · MathNet 2021 — Part 01

Question 14

How many ordered pairs $(x, y)$ of real numbers satisfy the following system of equations?
$$
\begin{aligned}
x^2 + 3y &= 9 \\
(|x| + |y| - 4)^2 &= 1
\end{aligned}
$$
  1. 1
  2. 2
  3. 3
  4. 5
  5. 7