SC READY Math Grade 8 Practice Questions - South Carolina SC READY Mathematics Assessment - Grade 8 Exam

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Which equation for a line of best fit models a scatter plot trend where y starts at 20 when x = 0 and decreases by 2 units for every 1 unit increase in x?

y = -2x + 20 y = 2x + 20 y = -20x + 2 y = 0.5x - 20

Correct Answer:

y = -2x + 20

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