Given that x and y are in direct proportion, and $y_{1}, y_{2}$ are values of $y$ corresponding to the values $x_{1}, x_{2}$ of $x$ respectively. Which of the following is correct?

x_{1} y_{2} = x_{2} y_{1}

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x_{1} y_{1} = x_{2} y_{2}

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x_{1} x_{2} = y_{1} y_{2}

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\frac{x_{1}}{y_{1}}

\frac{y_{2}}{x_{2}}

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Solution

The correct option is A $x_{1} y_{2} = x_{2} y_{1}$
When $x$ and $y$ are in direct proportion, we can write $\frac{x_{1}}{y_{1}} = \frac{x_{2}}{y_{2}}$

[ $y_{1}, y_{2}$ are values of $y$ corresponding to the values $x_{1}, x_{2}$ of $x$ respectively] which gives $x_{1} y_{2} = x_{2} y_{1}$ .

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Similar questions

Given that x and y are in inverse proportion, and $y_{1}$ , $y_{2}$ are values of y corresponding to the values $x_{1}, x_{2}$ of x respectively. Which of the following is correct?

Given that x and y are in direct proportion, and $y_{1}, y_{2}$ are values of $y$ corresponding to the values $x_{1}, x_{2}$ of $x$ respectively. Which of the following is correct?

Q. Given that x and y are in inverse proportion, and

y_{1}, y_{2}

are values of y corresponding to the values

x_{1}, x_{2}

of x, respectively. Which of the following is correct?

Given that x and y are in inverse proportion, and $y_{1}$ $y_{2}$ are values of $y$ corresponding to the values $x_{1}$ $x_{2}$ of $x$ respectively. Which of the following is correct?

Q. If

x

and

y

are inversely proportional, find the values of

X_{1}, X_{2}

and

Y_{1}, Y_{2}

in the table given below:

$x$	$8$	$X_{1}$	$16$	$X_{2}$	$80$
$y$	$Y_{1}$	$4$	$5$	$2$	$Y_{2}$

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Given that x and y are in direct proportion, and y1,y2 are values of y corresponding to the values x1,x2 of x respectively. Which of the following is correct?

The correct option is A x1y2=x2y1When x and y are in direct proportion, we can write x1y1=x2y2 [y1,y2 are values of y corresponding to the values x1,x2 of x respectively] which gives x1y2=x2y1.

Given that x and y are in direct proportion, and $y_{1}, y_{2}$ are values of $y$ corresponding to the values $x_{1}, x_{2}$ of $x$ respectively. Which of the following is correct?

The correct option is A $x_{1} y_{2} = x_{2} y_{1}$
When $x$ and $y$ are in direct proportion, we can write $\frac{x_{1}}{y_{1}} = \frac{x_{2}}{y_{2}}$

[ $y_{1}, y_{2}$ are values of $y$ corresponding to the values $x_{1}, x_{2}$ of $x$ respectively] which gives $x_{1} y_{2} = x_{2} y_{1}$ .