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What Are Horizontal Lines?

What is a Horizontal Line?

Summary

  1. All lines can be written in standard form
  2. Ax+By=C is standard form for any line
  3. Point (0,2) is the y-intercept of horizontal line y=2
  4. So in the example, b=2
  5. y-coordinate is 2 for all points on line y=2

Notes

    1. The lines cross the y-axis, so they have a y-intercept
    2. The lines are parallel to the x-axis, so they have no x-intercept
    1. Ax+By=C is standard form
    2. x-coordinate is 0, y-coordinate is b
    3. The equation for a horizontal line is y=b
    1. y=2 is the same form as y=b, so it's a horizontal line
    2. b=2
    3. y-coordinate is 2 for all points on line y=2