Will give brainlost :)

3

Step-by-step explanation:

Step 1:

To find the slope the formula is given by

  Slope = (Δy)/(Δx) =

( Change in Y Co-ordinate)/ (Change in X Co-ordinate) =(y₂-y₁)/(x₂-x₁)

Step 2:

In the given figure y coordinate change from +4 to +1 and X coordinate changes from +1  to +2.

y₂= 4, y₁= 1

x₂= 2 x₁=1

Applying the values in the above formula as follows

Slope= (4-1)/(2-1)

         = (3)/(1)

          = 3

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.