Question 330311
Use the distance formula for points.

b(sqrt[2]) = sqrt[(3 + 4)^2 + (-2 - 5)^2]

b(sqrt[2]) = sqrt[49 + 49]

b(sqrt[2]) = sqrt[98]

To find b, divide both sides by sqrt[2].

b = sqrt[98]/sqrt[2]

b = 7