Question

8) y is inversely proportional to x?. When x = 4, y = 3. Find y when x = 5.

Answer 1

Answer:

$\displaystyle y=2.4$

Step-by-step explanation:

${\displaystyle y\propto \frac{1}{x} }$

$\displaystyle y=\frac{k}{x}$

$\displaystyle 3=\frac{k}{4}$

$\displaystyle 3 \times 4=k$

$\displaystyle k=12$

$\displaystyle y=\frac{12}{5}$

$\displaystyle y=2.4$