Answer:
Horizontal lines have no vertical change -- it continues straight left or right. In other words, the change in the y values between any points on the graph is 0, since there is no change. This means that the slope of a horizontal line is 0
Step-by-step explanation:
hope this helps
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The line's slope remains constant throughout, its a line that passes through the y - axis therefore it's slope will be 0.
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