We are given the graph of a line that passes through the origin. Therefore, it must be of the form:
[tex]y=mx[/tex]
We also notice that the line passes through the point (x, y) = (1, 2). Replacing the point in the equation:
[tex]\begin{gathered} 2=m(1) \\ 2=m \end{gathered}[/tex]
Replacing the value of "m":
[tex]y=2x[/tex]
Therefore, the equation of the given line is y = 2x
