Final answer:
To sketch a line given an equation such as y = 9 + 3x, use its y-intercept (9) and slope (3) to find and plot points on a graph, then draw the line through these points.
Step-by-step explanation:
The original question seems to have some typos or is incomplete, but based on the information provided, I can help explain how to plot a line given an equation such as y = 9 + 3x. This equation is in slope-intercept form (y = mx + b), where m represents the slope of the line and b represents the y-intercept. To sketch the graph of this equation, you would start at the y-intercept, which is 9 in this case, and then use the slope to find additional points. The slope 3 means that for each increase of 1 in x, the value of y increases by 3. Therefore, you could use values like (0, 9), (1, 12), and (2, 15) to plot points and draw the line on a graph.