Question

The following data set follows the equation $y=10x$. Use this information to find the missing entries $A$ and $B$.

• A. $A=6200;B=78$
• B. $A=62;B=7800$
• C. $A=6200;B=7800$
• D. $A=62;B=78$

Answer 1

The correct option is B $A=62;B=7800$

The observations follow the equation $y=10x$.

So, for the observation in the first row,
Value of y = $620$.
Value of x = $A$.

∴ Putting the values of x and y we get,
$620=10\times A$
$\Rightarrow A=\frac{620}{10}=62$

So, the value of $A$ is $62$.

Now, for the observation in the second row,
Value of y = $B$
Value of x = $780$

So, putting values we get,
We know, $y=10x$
$B=10\times 78=7800$

Hence, the missing entries are:
$A=62;B=7800$.