Final answer:
The equation of the line that passes through the point (5, 7) and is perpendicular to the line x = 4 is y = 7.
Step-by-step explanation:
The equation of the line that passes through the point (5, 7) and is perpendicular to the line x = 4 can be determined using the slope of the given line. The line x = 4 is a vertical line, so its slope is undefined. Any line perpendicular to a vertical line will have a slope of 0. Therefore, the equation of the line that passes through (5, 7) and is perpendicular to x = 4 is y = 7.