If x and y are inversely proportional, find the values of x1, x2, y1 and y2 in the table given below:
X
8
x1
16
x2
80
Y
y1
4
5
2
y2
8 × y1 = 16 × 5
⇒ y1 = 10
x1 × 4 = 16 × 5
⇒ x1 = 20
x2 × 2 = 16 × 5
⇒ x2 = 40
80 y2 = 16 × 5
⇒ y2 = 1