Question

-1

The distance AB
rounded to the
nearest tenth = [?]
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-2
-1
0
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B
Hint: Use the distance formula:
d = (x2 – X1)2 + (y2 - yı)?
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Answer 1

AB = 4.5

Explanation:

Distance between A(-1, 2) and B(1, -2):

`AB = √((x_2 - x_1)^2 + (y_2 - y_1)^2)`

Let,

`A(-1, 2) = (x_1, y_1)`

`B(1, -2) = (x_2, y_2)`

`AB = √((1 - (-1))^2 + (-2 - 2)^2)`

`AB = √((2)^2 + (-4)^2)`

`AB = √(4 + 16) = √(20)`

`AB = 4.5` (nearest tenth)