If a line goes through both points, the slope of that line would be .
Step-by-step explanation:
The slope of a line is equal to the ratio between the vertical change of this line "rise" and the corresponding horizontal change "run":
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If a non-vertical line goes through two distinct points and where , the vertical change (rise) would be . The corresponding horizontal change would be . Thus, the slope of that line would be:
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In this question, and for the first point, whereas and for the second point.
The rise (vertical change) of this line from the first point to the second would be . The corresponding run (horizontal change) would be .
Thus, the slope of this line would be:
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In other words, the slope of this line is . Geometrically, a slope with a slope of would be horizontal. The vertical coordinate of all points on such line would be the same ( for points on the line in this question.)
Step-by-step explanation: I don't really know if I'm right let me know if I am but what I came up with is half of 20 is 10 half of 10 is 5 and half of 5 is two and a half so $2.50