Write an equation for the line below.

  x = 3

Step-by-step explanation:

A vertical line has the form x = constant. The graph shows the constant you want is 3.

answer: 80,000

step-by-step explanation:

the population doubles every day.

10,000*2=20,000 day 4

20,000*2=40,000 day 5

40,000*2=80,000 day 6

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x