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MrMuchimi
3 years ago
9

Write an exponential function of the form y=ab^x whose graph passes through the given points.

Mathematics
1 answer:
umka21 [38]3 years ago
8 0
We\ substitude\ points\ into \ formula:\\ y= ab^{x}\\\{ {{4=ab^1} \atop {12=ab^2}} \right.  |Substitude\ a= \frac{4}{b} \ from\ first \ equation\\12= \frac{4}{b}*b^2\\
12=4b|:4\\ 
b=3\\a= \frac{4}{3} \\
y=4^x
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