Answer:
The equation that represents a proportional relationship must have this form:
[tex]y=mx[/tex]
And the graph of a proportional relationship must be a a line that passes thorugh the origin.
Step-by-step explanation:
Since the graph is not attached, I will give you a general explanation about how to solve the exercise.
The equation of a line that passes through the origin is the following:
[tex]y=mx[/tex]
Where "m" is the slope of the line.
The proportional relationships have the following form:
[tex]y=kx[/tex]
Where "k" is the Constant of proportionality.
Therefore, the graph of proportional relationships is a line that passes through the origin.
Therefore the equation that represents a proportional relationship must have this form:
[tex]y=mx[/tex]
And the graph is a a line that passes thorugh the point [tex](0,0)[/tex]