Question

y is inversely proportional to x, and y = 30 when x = 10.a. Write an equation relating x and y. b. Find y when x = 150.

Answer 1

we get that

$y=\frac{k}{x}\rightarrow30=\frac{k}{10}\rightarrow k=30\cdot10=300$

having that

$y=\frac{300}{150}=2$