Nonlinear Functions

SAT Math· difficulty 4/5

Which function has y-intercept 6 and decays exponentially?

A
$y = 6 \cdot (1/3)^x$
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B
$y = 6 - x$
C
$y = 6x^{-1}$
D
$y = 6 \cdot 2^x$

Explanation

y = 6 (1/3)^x

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