Answer: b. negative
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Explanation:
Each time x goes up, y goes down. This inverse relationship means we have a negative slope.
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We can apply the slope formula to get further proof.
Let's say we pick the first two columns to form the points (1,24) and (2,18)
Then apply the slope formula to get...
m = (y2-y1)/(x2-x1)
m = (18-24)/(2-1)
m = -6/1
m = -6
The slope is -6.
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Visually we can see that the line goes downhill as you move from left to right. See the diagram below.
