What is the vertical change from Point A to Point B? What is the horizontal change from Point A to Point B?

What is the rate of change shown on the graph? Give
the answer as a decimal rounded to the nearest tenth, if
necessary

The vertical change is 1

The horizontal change is =2

The rate of change  .5

Step-by-step explanation:

Point A is at (2,1)

Point B is at (4,2)

The vertical( up and down) change is (2-1) = 1

The horizontal ( left and right) change is (4-2) =2

The rate of change is vertical over horizontal (1/2) = .5

i think it would be 42cm

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.