1. The problem asks to find the function $j(x)$ given points $(-1,-1)$ and $(4,y)$ where $y$ is unknown. 2. We need to determine the function type or rule for $j(x)$ using the given points. 3. Since only two points are given, assume $j(x)$ is linear: $j(x) = mx + b$. 4. Use the point $(-1,-1)$ to write the equation: $-1 = m(-1) + b \Rightarrow -1 = -m + b$. 5. We need the second point to find $m$ and $b$, but $y$ at $x=4$ is missing. 6. Without the second $y$ value, we cannot find a unique linear function. 7. If you provide the $y$ value at $x=4$, we can solve for $m$ and $b$. Final answer: More information is needed to determine $j(x)$ uniquely.