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Alchen [17]
2 years ago
8

The graph of y = -3x + 2 intersects the graph of an exponential function at (-1, 5). Which of the following could be the exponen

tial function?
a) y = 10(2)
^{x}
b) y = 10(0.5)^{x}
c) y = 5^{x}
d) y = 5(2)^{x}
Mathematics
2 answers:
Andre45 [30]2 years ago
8 0
Of the function choices offered, only the first includes (-1, 5) in its graph.
  a) y = 10(2)^x
miskamm [114]2 years ago
7 0

Answer:

a) y = 10(2)^x

Step-by-step explanation:

In order to solve this you just need to evaluate the options given with the values of the point that is given in order to see if that point is a possibility in that function, remember to use the value of x to avaluate and if the result is the same as the points value for y then that poin is part of the graph.

a) y = 10(2)^x

y=10(2)^x\\y=10(2)^-1\\y=10*\frac{1}{2} \\y=5

Remember that when elevating to negative numbers the ecponent becomes a numerator, so the only option that is correct would be the first one a) y = 10(2)^x

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