Which of the following exponential functions goes through the points (1, 12) and (236)
2 answers:
Answer:
y = 4
Step-by-step explanation:
For an exponential function in the form
y = a
Use the given points to find the values of a and b
Using (1, 12), then
12 = ab → (1)
Using (2, 36), then
36 = ab² → (2)
Divide (2) by (1)
=
, then
3 = b
Substitute b = 3 into (1) for value of a
12 = 3a ( divide both sides by 3 )
4 = a
Thus
y = 4 ← is the exponential function
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