Question

Find the value of the expression $-4x$ for the given values of $x:$
$x=1,5,-6,\frac{3}{7}$

• A. $4,20,-24,\frac{12}{7}$
• B. $4,20,24,\frac{-12}{7}$
• C. $-4,-20,24,\frac{12}{7}$
• D. $-4,-20,24,\frac{-12}{7}$

Answer 1

The correct option is D $-4,-20,24,\frac{-12}{7}$

$x=\{1,5,-6,\frac{3}{7}\}$

Expression : $-4x$

When we take $x=1,$ output $-4x=(-4)\left(1\right)=-4$

When we take $x=5,$ output $-4x=(-4)\left(5\right)=-20$

When we take $x=-6,$ output $-4x=(-4)(-6)=24$

When we take $x=\frac{3}{7},$ output $-4x=\frac{-4\left(3\right)}{7}=\frac{-4\times 3}{7\times 1}-=\frac{-12}{7}$

So,

$x$	$\to$	$-4x$
$1$	$\to$	$-4$
$5$	$\to$	$-20$
$-6$	$\to$	$24$
$\frac{3}{7}$	$\to$	$\frac{-12}{7}$

$-4x=\{-4,-20,24,\frac{-12}{7}\}$