Answer:
The graph is missing, but we can draw and describe each option.
Choice 1
[tex]y=3x[/tex]
This is a linear function which passes throuhg the origin of the coordinate system because it doesn't have the constant [tex]b[/tex] which is the y-intercept of the line.
The first image attached shows this function.
Choice 2
[tex]y=3x^{2} +1[/tex]
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.
Choice 3
[tex]y=3x-1[/tex]
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.
Choice 4
[tex]y=3x+1[/tex]
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).
