Question

Suppose z is proportional to the square root of x. If z = 717 when x = 9, find the proportionality constant k.??

Answer 1

Answer:

  239

Step-by-step explanation:

Write the equation. Fill in the given values, and solve for the unknown,

  z = k√x

  717 = k√9

  k = 717/3 = 239

The constant of proportionality is 239.

Answer 2

Answer:

$z = \sqrt{x} \\ invite \: constant \\ z = k \sqrt{x} \\ 717 = k \sqrt{9} \\ \frac{717}{ \sqrt{9} } = \frac{k \sqrt{9} }{ \sqrt{9} } \\ k = \frac{717}{3} \\ k = 239$