Final answer:
The equation y = 3/7x - 39 represents the line that is parallel to y = 3x + 11 and passes through the point (-21,42).
Step-by-step explanation:
To find an equation that represents a line parallel to y = 3x + 11 and passes through the point (-21,42), we need to keep the slope the same, which means the coefficient of x should be the same. The equation y = 3/7x - 39 represents the line that is parallel to the given line.