The graph shows that the rise is 3 and the run is 3, and the hypotenuse is the length between the two points.
let hypotenuse = x
using Pythagorean theorem:
x^2= 3^2 + 3^2
x^2 = 9 + 9
x= sqrt 18
x = 4.2426....
rounding to the nearest 10th:
x = 4.2
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