Datasheet

6. This relation fails the vertical line test as evident by the two coordinates
directly above each other. Since the relation fails the vertical line test, the
relation is not a function.
7. The function is y = 7x or f(x) = 7x. If Lauren works four hours, she will earn
$28. If Lauren works seven hours, she will earn $49. If Lauren works 11 hours,
she will earn $77.
8. The function is y = .07(x - 50) + 30 or f(x) = .07(x - 50). For 50 text messages
per month, you will spend $30. For 100 text messages per month, you will
spend $33.50. For 225 text messages per month, you will spend $42.25 and
for 500 text messages per month, you will spend $61.50.
Extensions
1. Answers may vary.
2. Answers may vary.
Activity 4 • Algebra I with the Casio fx-9750GII
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