In this lesson, we will learn how to recognise direct and inverse variation involving different powers and roots of x.
Students will be able to
Q1:
Given that 𝑦 varies directly as 𝑥, write an equation for 𝑦 in terms of 𝑥 using 𝑘 as a non-zero constant.
Q2:
𝑥 and 𝑦 are two variables, where 𝑦 varies directly with the multiplicative inverse of 1𝑥. If 𝑦=35 when 𝑥=10, determine the values of 𝑦 when 𝑥∈{3,4,5}.
Q3:
Given that 𝑦∝𝑥, where 𝑦=−15 when 𝑥=7, find the relation between 𝑥 and 𝑦.
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