Answer:
i think they are y and (x,y)
The first one (top left) is a function. Use the vertical line test, if a vertical line crosses the line drawn on the graph twice, then it's not a function.
This diagram represents a: C: Food Chain. it explains what gets eaten by whom to survive. Hope it helps!!
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Original Price
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$50
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Discount
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15% of $50
= 15% x $50
= 0.15 x 50
= $7.50
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Sale Price
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$50 - $7.50 = $42.50
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Answer: $42.50
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