Standard Level
2.03 Direct variation
Interactive practice questions
If $\left(4,512\right)$(4,512) is on the curve, $P=kQ^4$P=kQ4, solve for $k$k.
Easy
1min
If $\left(10,15\right)$(10,15) is on the curve $P=\frac{k}{Q}$P=kQ, solve for $k$k.
Easy
< 1min
A variable $M$M is directly proportional to the square of $N$N.
Easy
1min
In exchange rate calculations the constant of proportionality is the exchange rate itself. Determine the exchange rate $k$k if I can purchase:
Easy
1min
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