# Chapter 1 - Tools of Geometry - Chapter Review - Page 74: 30

1.4

#### Work Step by Step

use the distance formula $d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$ substitute $d=\sqrt{(0-(-1))^2+(4-5)^2}$ simplify in parentheses $d=\sqrt{(1)^2+(-1)^2}$ $d=\sqrt{1+1}$ $d=\sqrt{2}$ $d=1.4$

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