Determine the area of the region enclosed by $x$ and $y$?

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$$x= \left(\frac{1}{2} y\right)^2 - 3$$

$$Y= x-1 $$

All examples I viewed online seem to have no $x$ in them, should I write the equation in terms of $Y$? Would doing this give me $Y=x-1$ and $y= \left(\frac{1}{2}x\right)^2$. (Nearly $100 \%$ sure that's wrong.)

I can't get to the integration bits without understanding the question first, any tips please?

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To find the area bounded by the curves in this case is easier to consider an equivalent system of the two functions

\begin{align} f_1(y)&= \left(\frac{1}{2} y\right)^2 - 3 \\ f_2(y)&=y+1, \end{align}

or, to make it look more familiar,

\begin{align} f_1(x)&= \left(\frac{1}{2} x\right)^2 - 3 \\ f_2(x)&=x+1, \end{align} since $y$ or $x$ is just the name of parameter, which we are free to choose suitable.

Next you need to find the points of intersection, when $f_1(x)=f_2(x)$ which is this simple case are the limits of integration $a=2-2\sqrt5$, $b=2+2\sqrt5$.

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The area then is just

\begin{align} S&=\int_a^b f_2(x)-f_1(x) dx. \end{align}