Coordinate Geometry

The slope of line n in the $xy$-plane is not $0$ and the $y$-intercept of line n in the $xy$-plane is not $0.$ The equation of line $n$ is $y = mx + b,$ where $m$ and $b$ are constants. What is the value of $m + b?$

1) The $y$-intercept is equal to the square of the $x$-intercept

2) The line goes through the point $(-8, -16)$

The OA is C

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