where

$Q=\sqrt[\phantom{2}]{2gh(cA{)}^2}$

$Q=$ Flow rate through the opening $f\frac{t^3}{s}$

$g=$ Gravity, $32\mathrm{.}2[f\frac{t}{s^2}]$

$h=$ Head difference $ft$

C $=$ Coefficient of discharge $[-]$

$A=$ Cross$-$sectional area of the opening $f{t}^2$

You create an experiment that measures the discharge while changing the head difference. You plot the measured squared flow against the observed head in Excel and produce the following trendline:

$y=146x$

a$.$ What does the value y represent in the trendline?

b$.$ What does the value $x$ represent in the trendline?

c$.$ If the cross$-$sectional area is $2$ square feet, what is the value of $C$ according to the trendline?