Answer:
The graph is missing, but we can draw and describe each option.
<h3>Choice 1</h3>
![y=3x](https://tex.z-dn.net/?f=y%3D3x)
This is a linear function which passes throuhg the origin of the coordinate system because it doesn't have the constant
which is the y-intercept of the line.
The first image attached shows this function.
<h3>Choice 2</h3>
![y=3x^{2} +1](https://tex.z-dn.net/?f=y%3D3x%5E%7B2%7D%20%2B1)
This is a quadratic function. Its graph belongs to a parabola, all quadratic functions are represented by a parabola. In this case, the parabola has a vertex at (0,1). The second image attached shows this function.
<h3>Choice 3</h3>
![y=3x-1](https://tex.z-dn.net/?f=y%3D3x-1)
This is also a linear function, which is parallel to the first function, because they have the same slope of 3. But this one has y-intercept at (0,-1). The third image attached shows this function.
<h3>Choice 4</h3>
![y=3x+1](https://tex.z-dn.net/?f=y%3D3x%2B1)
This is also a linear function parallel to function 1 and function 3. The fourth image attached shows its graph. In this case, the line has y-intercept at (0,1).