How to solve system of equation using GDC

[tired comet]

So I am right now learning about systems of equation, and I am right now having a hard time understanding how to solve questions like these using a gdc calculator, please help because I am so clueless on how to use gdc to solve a question like this, I have watched videos, but it keeps being syntax error

[halcyon wing]

Here is a hint: any point (p,q) lying on a curve described by the equation y=f(x) must satisfy q=f(p).

In your terminology: any point (p,q) lying on a model of the form y=f(x) must satisfy the equation q=f(p).

Can you solve part (a) from this?