<p>The price $P$ dollars of modelling clay is directly proportional to its mass $m$ grams. A $250$ g pack costs $\$6$.</p>
<ol class="abc-list"><li data-list-item-id="item-1791977738171-tlf2rkh67" data-list-item-path="item-1791977738171-tlf2rkh67"><div class="list-item-paragraph"><p>Find the equation connecting $P$ and $m$.</p></div></li><li data-list-item-id="item-1791977746717-xf86r2lin" data-list-item-path="item-1791977746717-xf86r2lin"><div class="list-item-paragraph"><p>Find the price of $375$ g.</p></div></li><li data-list-item-id="item-1791977764751-wleb8dl8f" data-list-item-path="item-1791977764751-wleb8dl8f"><div class="list-item-paragraph"><p>Find the mass that costs $\$10.80$.</p></div></li></ol>

The price $P$ dollars of modelling clay is directly proportional to its mass $m$ grams. A $250$ g pack costs $\$6$.

<p>Find the equation connecting $P$ and $m$.</p>

<p>Find the mass that costs $\$10.80$.</p>

Direct and Inverse Proportion

Direct and Inverse Proportion