Answer:
x=17.8
Step-by-step explanation:
Perpendicular lines intersect at 90 degrees or perpendicular angles. As such, their slopes are related. The slope of each line is the negative reciprocal of the other. For the equation, y=15.5 there is no slope and is a horizontal line through the y-axis. Therefore the perpendicular line is a vertical line through the x-axis and has form x=a. We write for a the x-coordinate of the point to form the line. x=17.8
