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y = 9 is a horizontal line with slope 0.

Slope = (y2 - y1)/(x2-x1), and y is constant so that numerator is always 0.

The y-intercept is where the line crosses the y-axis when x=0. Since y is always 9 in this case, that is the y-intercept.

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12y ago
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Q: What is the slope and y intercept for y equals 9?
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