What is the slope of any horizontal line?

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Multiple Choice

What is the slope of any horizontal line?

Explanation:
Slope is a measure of how steep a line is, found by comparing how much it rises to how much it runs. For a horizontal line, there is no rise as you move along it, so the change in y is zero while the change in x is not zero. This makes the slope m = Δy/Δx = 0/Δx = 0. In other words, a horizontal line has zero slope, showing there’s no vertical change no matter how far you move along it. (If you look at a vertical line, the run is zero, which makes the slope undefined, and that’s how the different orientations behave.)

Slope is a measure of how steep a line is, found by comparing how much it rises to how much it runs. For a horizontal line, there is no rise as you move along it, so the change in y is zero while the change in x is not zero. This makes the slope m = Δy/Δx = 0/Δx = 0. In other words, a horizontal line has zero slope, showing there’s no vertical change no matter how far you move along it. (If you look at a vertical line, the run is zero, which makes the slope undefined, and that’s how the different orientations behave.)

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