HELP! Decide whether each table could represent a proportional relationship. if the relationship could be proportional, what would be the constant of proportionality?
a. Annie’s Attic is giving away $5 off coupons
|original price| sale price|
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|$15. | $10. |
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|$25. |$20. |
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|$35. |$30. |
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b. Bettie’s Boutique is having a 20% off sale.
|original price| sale price|
—————————————
|$15. | $12. |
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|$25. |$20. |
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|$35. |$28. |
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Original price is left of tables and sale price is right of tables