Answer:
a) B
b) D
c) C
d) A
Step-by-step explanation:
a)
The graph is of a decay function, so the base of the exponential is less than 1. The only choice is B, y = 2(1/2)^x.
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b)
The graph is a reflection across the x-axis, so the leading multiplier is negative. The only choice is D, y = -2^x.
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c)
The y-intercept is less than 1, so the leading multiplier will be less than 1. The only choice is C, y = 1/2(2^x).
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d)
The y-intercept of this growth function is 2, so the leading coefficient is 2 and the growth factor is greater than 1. The only choice is A, y = 2(2^x).
