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3 years ago

The function of f(x) varies directly with x, and f(x)=48 when x=8. Evaluate f(x) when x=2

Mathematics

1 answer:

lara31 [8.8K]3 years ago

5 0

Here's the equation for direct variation. k=y/x [ f(x)=y]
Find k
k= 48/8=6
6=y/2
y=12
Hope this helps.

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1 year ago

Linda can bicycle 48 miles in the same time as it takes her to walk 12 miles. She can ride 9 mph faster than she can walk. How f

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$\frac{48}{r+9}=\frac{12}{r}$

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$\frac{48}{r+9}=\frac{12}{r}$

Therefore, the equation $\frac{48}{r+9}=\frac{12}{r}$ can be used to solve the rates for given problem.

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3 years ago