Answer:
Where's the chart?
Step-by-step explanation:
{(3, -1), (7, 1), (-6, -1), (9, 1), (2, -1)}
Any relation having repetitive x-coordinates, is NOT a function.
perimeter = 2width + 2 length
102 = 2(x+9) + 2x
102 = 2x + 18 +2x
102 = 4x +18
84 = 4x
21 = x
Length = x = 21 inches
Width = x + 9 = 21 + 9 = 30 inches