The points $(1,4)$, $(-3,4)$ and $(7,4)$ all lie on a:
The points $(1,4)$, $(-3,4)$ and $(7,4)$ all lie on a:
- Vertical line
- Horizontal line through $y=4$
- Line of slope $1$
- Parabola
Solution
All three points share $y=4$, so they lie on the horizontal line $y=4$.
Asked in: IMO
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