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ACCUPLACER
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Rate of Change and Direct Variation
Grade Level
ACCUPLACER
AAF.019 Rate of Change and Direct Variation
0%
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🔴 Hard
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Progress to Next Level
25% to Medium
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A quantity y varies directly with x. When x is 20, y is 50. If x decreases by 30%, which statement correctly models the relationship and new value of y?
A
The model is y = x + 30, and the new y-value is 44.
B
The model is y = 0.4x, and the new y-value is 8.
C
The model is y = 2.5x, and the new y-value is 20.
D
The model is y = 2.5x, and the new y-value is 35.
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