We want to reflect Trapezoid JKLM about the line y = 1. The graph below shows the points and the line:
Reflection about y = 1 would mean that the reflected points would be at same x-coordinate but y coordinate would be same distance from the line y = 1.
y coordinates of reflected points:
• J >>> 2 units up from y = 1, so reflected point would be 2 units down from y = 1
Thus,
J'(-4, -1)
• K >>> 6 units up from y = 1, so reflected point would be 6 units down from y = 1
Thus,
K'(-2,-5)
• L >>> 6 units up from y = 1, so reflected point would be 6 units down from y = 1
Thus,
L'(2,-5)
• M >>> 2 units up from y = 1, so reflected point would be 2 units down from y = 1
M'(3,-1)
The reflected points are shown in graph below [in blue]: