it is 0
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A horizontal line has a slope of zero. The equation of a horizontal line is y = a.
Well since the lines are parallel they would have the same slope. And the slope of any horizontal line is 0. The slope of a vertical line is undefined.
positive slope, the line goes up (increases) from left to right negative slope, the line goes down (decreases) from left to right zero slope, the line is horizontal (flat) undefined slope, the line is vertical (straight up)
We usually denote the slope of a line as M. Horizontal lines have a slope of zero. Mhorizontal line = 0 Verticle lines have a slope that is undefined. Note that the slope is not infinite, but is undefined. Mvertical line = undefined To write the equation of a horizontal or vertical line, we need to know if it's going to be a slope-intercept form or a point-slope form.
Yes, it is true; slope zero is no slope.