Question

Make the proper pair.

• A. Directly proportional
• B. Inversely proportional
• C. x= 48
• D. x= 10

Answer 1

$\frac{A}{B}$ = a constant; is the expression if A and B are directly proportional.

AB = a constant; is the expression if A and B are inversely proportional.

If $\frac{5}{4}$ = $\frac{60}{x}$, then $x$= $\frac{60\times 4}{5}$ = 48

If 5 $\times$ 4 = 2 $\times$ $x$, then $x$ =$\frac{5\times 4}{2}$ = 10.