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8_murik_8 [283]
3 years ago
12

If y varies directly as x and y =2 when x = 10, find y when x = 22 ? Step by step work please

Mathematics
1 answer:
iris [78.8K]3 years ago
6 0

Answer: k=-\frac{1}{9}

Step-by-step explanation:

1. You kwnow that x and y vary directly, therefore, the expression has the following form:

y=kx

Where k is the constant of variation.

2. You have that x=6 and y=-\frac{2}{3}, so, if you substitute these values and then you solve for the constant of variation, you obtain the following result:

k=\frac{y}{x}\\k=\frac{-\frac{2}{3}}{6}\\k=-\frac{1}{9}

3. The answer is the first option.


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