Tyree's solution is inaccurate. In step 1, he substituted incorrectly. The formula used distance between two points is incorrect.
What is the distance between two points?
The formula of distance between two points is P(x1, y1) and Q(x2, y2) is given by: d (P, Q) = [tex]\sqrt{(y2-y1)^{2} +(x1-x2)^{2}}[/tex].
Tyree has incorrectly substitutes the values in the formula. The correct substitution is -[tex]\sqrt{(-4+7)^{2} +(-2+7)^{2}}[/tex]
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