Answer:
A'(-1,1), B'(-5,1), C'(-3,3)
Step-by-step explanation:
Reflection across the y-axis replaces the x-coordinate with its opposite.
Length = 90 inch.
width = 30 inch
Let width of the rectangle = x inch.
So the length = 3x inch.
Perimeter = 2(length + width) = 2 (3x + x) = 8x.
So,
length = 3x = 3(30) = 90 inch.
width = x = 30 inch
