Question

Find the rate of change between the two points: (8, 1) and (4, 2) where x is in months and y is in inches.

a. 25 inches per month.
b. -.25 inches per month.
c. 4 inches per month.
d. -4 inches per month.

Answer 1

this is another way of saying whats the slope between these 2 points...you use this formula

(y2-y1)/(x2-x1)

remember coodinates are in the form (x,y)

Answer 2

a hint....you have 2 points.....
(8,1) and (4,2)
x1 y1 x2 y2

Answer 3

I got 4. Is that right?

Answer 4

well lets look

(2-1)/(4-8)

this comes to what?

Answer 5

.-25?

Answer 6

correct :) and it makes sense...because you're going down in months...so you dont gain rain...you lose it...yes you are correct :)

Answer 7

Ok, thank you! :)

Answer 8

anytime :)