We can rewrite the equation in the slope-intercept form, which is $y = mx + b$, where $m$ is the slope and $b$ is the y-intercept.
In our case, we have $6x_1 + 7x_2 = 420$. We want to solve for $x_2$ in terms of $x_1$.
$7x_2 = -6x_1 + 420$
$x_2 = -\frac{6}{7}x_1 +
Show more…