algebra

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In a coordinate plane, the points (2,4) and (3,-1) are on a line.

Which of the following must be true?

1. The line crosses the x-axis.
2. The line passes through (0, 0).
3. The line stays above the x-axis at all times.
4. The line rises from the lower left to the upper right.
5. The line is parallel to the y-axis.

  • algebra -

    Since the y of the first point is above the x-axis and the y of the second point is below, the line must surely cross the x-axis

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