Question

In direct proportion y=k x, if x=3 when y=9, what is constant of proportionality k=____

Answer 1

Answer:

given

$y = kx \\ ifx = 3 \: \: \: \: wheny = 9 \\ by \: substing \: xand \: y \: values \: in \: aboveequation \\ 9 = k \times 3 \\ 9 \div 3 = k \\ 3 = k$

Answer 2

step by step solution

y=kx

9=k×3

9÷3=k

3=k

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