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Goryan [66]
3 years ago
7

If y varies directly as x and y = 144 when x = 12, what is the value of y when x = 17?

Mathematics
1 answer:
Burka [1]3 years ago
4 0
y=kx \\ \\
y=144 \hbox{ when } x=12 \\
\Downarrow \\
144=k \times 12 \\
k=12 \\ \\
y=12x \hbox{ and }
x=17 \\
\Downarrow \\
y=12 \times 17 \\
y=204 \\ \\
\boxed{y=204} \hbox{ when } x=17
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