Answer
$y=7x$
Work Step by Step
Using $y=mx+b$ where $m$ is the slope and $b$ is the $y$-intercept, then the equation of the line with the given slope equal to $
7
$ and the given $y-$intercept equal to $\left(0,
0
\right)$, is
\begin{array}{l}
y=7x+0
\\\\
y=7x
.\end{array}