Question

Find the value of the expression $2x$ for the given values of $x:$
$x=1,5,-6,\frac{3}{7}$

• A. $2,8,-12,\frac{6}{7}$
• B. $2,10,-12,\frac{6}{7}$
• C. $2,10,-12,\frac{6}{14}$
• D. $2,10,-12,\frac{3}{7}$

Answer 1

The correct option is B $2,10,-12,\frac{6}{7}$

$x=\{1,5,-6,\frac{3}{7}\}$
Expression : $2x$
When we take $x=1,$ output $2x=2\left(1\right)=2$
When we take $x=5,$ output $2x=2\left(5\right)=10$
When we take $x=-6,$ output $2x=2(-6)=-12$
When we take $x=\frac{3}{7},$ output $2x=\frac{2\left(3\right)}{7}=\frac{2\times 3}{7\times 1}-=\frac{6}{7}$
So,

$x$	$\to$	$2x$
$1$	$\to$	$2$
$5$	$\to$	$10$
$-6$	$\to$	$-12$
$\frac{3}{7}$	$\to$	$\frac{6}{7}$

$2x=\{2,10,-12,\frac{6}{7}\}$