Answer:
Length of AB = 10
Step-by-step explanation:
This can be found by using the distance formula.
Distance Formula = [tex]\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}[/tex]
Where
(x_1,y_1) is the first coordinate pair and (x_2,y_2) is the second coordinate pair
Thus
x_1 = 9 and y_1 = 18
x_2 = 1 and y_2 = 12
Plugging them into the formula, we get:
Length = [tex]\sqrt{(y_2-y_1)^2+(x_2-x_1)^2} \\=\sqrt{(12-18)^2+(1-9)^2}[/tex]. WHich is equal to 10.
Length is 10
