1. The problem asks to describe the graph of $y = x$ shown with a dotted line and compare it with the solid line graph. 2. The equation $y = x$ represents a straight line passing through the origin with a slope of 1. This means for every increase of 1 in $x$, $y$ increases by 1. 3. The solid line graph is a parabola opening downwards with vertex near $(-5,6)$, indicating it is a quadratic function with a maximum point. 4. The dotted line graph, representing $y = x$, is a straight line passing through points like $(-12,-12)$, $(-10,-10)$, ..., $(8,8)$. 5. The dotted line crosses the y-axis at 0 and has equal positive and negative values for $x$ and $y$, showing a linear relationship. 6. In summary, the dotted line is a linear function with constant slope 1, while the solid line is a quadratic function with a maximum vertex and downward opening. Final answer: The dotted line graph of $y = x$ is a straight line through the origin with slope 1, contrasting with the solid parabola opening downwards.