Give the coordinates of two points on the line x = 5.
Give the coordinates of two points on the line y = -2.
Write the equation of the horizontal line passing through the point (-1, -8).
Write the equation of the vertical line passing through the point (3, 1).
Is the line with equation x = 4 horizontal or vertical? What is the slope of this line?
Is the line with equation y = -8 horizontal or vertical? What is the slope of this line?

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