11
QuizMultiple Choice

Applying Linear Functions — Unit test

Question 11 • WCPSS-Introductory Math CR

What are the slope and the y-intercept of the linear function that is represented by the table?xy–3180123660

Answer
A
The slope is –2, and the y-intercept is 6.
B
The slope is –2, and the y-intercept is 12.
C
The slope is 2, and the y-intercept is 6.
D
The slope is 2, and the y-intercept is 12.

Explanation

From the table, when x increases from 0 to 3, y decreases from 12 to 6. The slope is (6 − 12) ÷ (3 − 0) = −2. The y-intercept is the y-value when x = 0, which is 12, so the correct choice is “The slope is −2, and the y-intercept is 12.”

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