What is the slope of the line that passes through ( 1, -19 ) and ( -2,-7

-4

Step-by-step explanation:

We can find the slope when given two points by using the following

m = (y2-y1)/(x2-x1)

  = (-7--19)/(-2 -1)

   = (-7+19)/(-2-1)

   = 12/-3

   =-4

answer:

at time x=0 we have 1000, at time x=1 we have 2000, at time x=2 we have 4000.  

so that's an initial value of 1000 and a ratio of 2,

y = 1000 (2^x)

hope this !